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So in this scenario the Marines are led by General Custer, they set up in the middle of a field with no fortifications whatsoever and take on 100k cavalry. I doubt they would be so stupid.

Could a fat guy with an AR 15 take on 100 guys with swords? Yes.

All of these videos, "Not enough ammo. They die."

I laughed when he said an arrow landing near the Marines would cause panic but there’s no issue for the Mongols coming at modern weaponry hey? 😂

Apparently you’ve never seen what a .50 duce can do... riding on a horse watching everyone around you get turned into chopped beef will probably make you reconsider everything.

I don't care what the Mongol historians have written, they weren't shooting those bows at 300 yard ranges. An English Longbow had an effective range of 200 yards. A modern compound bow has an effective range of 300 yards, max. The Mongols weren't shooting in earnest at anything more than 200 yards.

Horses in simulation: Charges machinegun positions like a chad Horses in reality: Throws the rider off when they got close to the perimeter

Yeah normally I don’t have too many gripes with your videos Binkov. But it seems with this one you missed a lot of points. For starters even though some of the men are “support troops”, “every marine is a rifleman”. All marines are trained to be combat infantrymen first. Furthermore the marines seem to have no tactical awareness/ability while the mongols use all the strategies. The marines have 15 miles of advanced knowledge but don’t set up any sort of defensive works? They don’t fight at night? Meanwhile the mongols use their extra horses as meat shields. The point of those was to make sure riders had horses no matter what, they were prized processions not cannon fodder. Furthermore what would keep them riding towards the loud noises and combat without riders? Mongols faced gunfire before but at much closer ranges and the horses still reacted negatively. The accuracy numbers also seem somewhat generic/arbitrary. US marines have notoriously good aim. And that was before modern sights. Modern marines are more accurate than ever at range. And even if not every round hits it’s mark, you said it yourself, the mongols would essentially be shoulder to shoulder, and many ranks deep. Any missed shot would either hit the man at your flank or potentially someone in formation behind you. 50 cal rounds would penetrate multiple men and horses, shredding groups. With formations that tightly packed mortars and all forms of explosives would have significant affects as well. That’s not even to mention potential smoke rounds that could disorient the enemy and break up charges. All in all a lot of points were missed. The quality of the US marines in their training, accuracy and even equipment. A complete glossing over basically of the psychological affects on the mongols seeing droves of their men gunned down at extreme ranges. A weird on and off use of tactics as well. Like I said I more often than not enjoy your videos and can gloss over small errors, but this video should probably be re-visited. (Hey a free new video which means more views!) anyways keep up the good work man.

A few issues, the US Marines given time and knowledge of the enemy which this case they have both, wouldn't just sit out in the open but would fortify their posistion, dig fighting holes, trenches, sand bags, use the natural terrain and brush to conceal and fortify their posistion, dial in their guns and mortars, set up land marks for known distances to increase the speed in which they can target advancing forces. Plus most squads would have access to high explosives such as C4, detcord etc. Have AT-4s, SMAWs, Carl Gustavs etc. and now most Heavy weapons units have a couple 40MM belt feed machine guns. Also the effective range of a Browning .50 is 1800 meters, and maximum range is 7400 meters. For the M240B and M249s which is being phased out for the IAR, the M240B effective range is 800 meters with a maximum range of 3725 meters. The effective range for the M16A4, and M4 service rifles is around 550 meters point target, 800 meters area target. Snipers and marksman can reach out and drop some one over a 1000 meters. So between the maximum range for the mortars and up to 300 meters the mongals would be under heavy fire from both mortars, and heavy machine guns, then when they get to 800 meters light and medium machine guns and rifle fire. From an entrenched position. Then even after sustaining heavy loss, they still get with in range of melee weapons the Marines still have their bayonets and pistols. The Mongals may be some what familiar with firearms and explosives but nothing on the scale in which they would face. The horses would go down, riders would be injured if not killed and even if the wound is not out right fetal it would become so if not treated soon after. Plus the loss of moral due to the chaos brought by the Marines would cause mass panic and fear, plus the horses would be frightened from the gunfire and explosions.

as a combat engineer in the canadian military, i can tell you right now that the marines position would not happen in an open field against 100,000 Calvary. Just speaking from my own expertise, the "logistics" platoon would have engineers attached where ever the marines go so there would be fighting positions, overhead protection, choke points of advance made, defensive mine fields or since this is american and not canadian it could actually lay a proper minefield with claymores at the very least which is directional in its blast. sharpened stakes around fighting positions because its been known for centuries now that charging horses will not attack a wall of spears, or sharped logs. and also concertina wire and barbed wire at the very least would stop a calvary charge in its tracks due to it being rows upon rows of razor wire. im saying this because if the mongols have the pre thought to use riderless horses and to encircle the enemy and actually use tactics, then the same should be given to the marines. machine gun nests would have beaten zones and already predetermined ranges set out for incoming waves of attackers on whats called a "range card", these areas known as "beaten zones" would be in the open areas where the obstacles would funnel riders into maximizing machine gun and mortar fire the most. once these beaten zones are hit the bodies of human and horse would clog those entrances and further encumber riders and soldiers trying to get within range making the rest have to either clear obstacles by hand under fire or climb over the ever growing pile of their dead comrades infront of them. also if the marines had any type of command structure that was smarter than a 10 year old, they would have their grenadiers already ranged for the choke points and beyond with their m203 grenade launchers to soften up the few that do get through the first few lines of obstacles and saving rifle ammunition for closer in ranges, which ultimately would be from 500 to 300 yards single fire pretty comfortably and then any closer the arrows would start flying down and hindering proper aimed shots but with proper overhead protection at 300 yards the arrows would do little to no damage until really close. any machine guns that are being used, would have a field day, and as a C9 and C6 gunner myself, would probably have to be constantly told to not shoot too much due to a very very target rich environment. as such, barrels would have to be changed frequently. in the prone position i can go from shooting, to changed barrel and shooting again in about 15-25 seconds, depending on if the gun is old and the barrel wants to seat properly. as long as the before mentioned chain of command makes sure the gunners dont change barrels or reload at the same time and to stagger those things, the machine gun fire should be fairly consistent through out. psychologically the toll on the mongol mind would be devastating in the first few minutes. the first wave wouldn't be alive for very long, the second wave wouldn't know what the hell hit the first and confusion would plague the rest of the riders. not to mention the lack of modern communication and having to rely on flags and trumpets, they wouldn't hear very much from a trumpet with a marine company unleashing the wrath of god upon them which would further lead to confusion and command break down. also the statistic of only 50% of mortar rounds would wound soldiers on horseback is laughable, due to the mongols not having the medical capacity to deal with modern gunshot and explosive wounds at the rate that they would be inflected. concision is also a game changer for mongols aswell with mortars, landmines, rocket launchers hitting nearby even would knock even an experienced rider off, give them a concision, ringing ears, confusion, which by definition is making that soldier combat ineffective. lastly those lancers that were so over stated as being the uhh ohh factor for the mongols in close, is a vast majority of them would be killed, maimed or routing before they even got a chance to get to the front line of the marines, based on defensive structures, gunfire, ect. every instance of Calvary charge in great numbers against machine guns and riflemen turns out poorly for the riders. there is just no way that horses could beat a battalion of marines in a prepared position. In the video yes, encircled (wouldn't happen), in the open (again wouldn't happen), and without prepared fighting positions, yeah i can see only having 10,000 mongols dying and "winning" in this conflict. But if it were to really happen head to head, it would be a slaughter. and if it were to REALLY happen, the mongols would just attack the supply chain until the marines died or left. so yeah... there is that.

"An infantry battalion is generally without vehicles or long term supplies." Simply not true, each battalion has its own vehicles integral to the battalion driven by motor transport, which are part of the battalion. So at the very least there would be Humvees with mounted machine guns.

I was a machine gunner in the USMC in late 90s. Some thoughts. Battalion would have a supply of claymore mines available. He left that out. The number wouldn't be huge, but they'd be there. Probably most useful as a last layer on the defense around 50-100 yards out to hit more concentrated groups. The machine gun I used had an effective range of a mile, though ammo would probably best be used to provide grazing fire range of 600 yards. Bullet trajectory never goes higher than a man that whole distance. Machine guns are set up with interlocking fields of fire, not shooting straight out. Hitting more targets. Probably focus on hitting targets at 300 to 600 meters, best accuracy while engaging before they are in range to use their weapons. Don't think the video covers even the basic tactics there. It also left out the MK19 automatic grenade launcher. This is a battalion weapons platoon weapon with a range of a mile, but again would probably be best use in that 300 to 600 range against concentrations that may happen. There are a lot of machine guns in a Marine battalion. Every four man fire team has a SAW. Again with the mortars, I don't see why you would engage at distance unless you can identify a clumped up target, or unless it's in the hope of psychological victory. They are zero threat outside of 300 yards, so the entire plan is keep them at that range whole maximizing the number of targets you hit. And they can dial in the exact spot they want to cover. Maybe put that right at the 300-350 range. Bodies become an obstacle. The horses advantage is speed, but dead bodies everywhere especially concentrated just at the max rang of their bows will make it very difficult to get in range to shoot with large numbers, and the few that do should be quickly killed with rifle and machine gun fire. I also think that craters from ordinance might start to create problems for the horses moving quickly. All this is not even giving the Marines the benefit of digging in. If they can get decent holes dug, the target cross section for an arrow to hit becomes almost nothing and they can let the enemy come close and get more concentrated have have fewer misses with bullets and more enemies hit with every explosive. Every marine carries a shovel and has done lots of digging. If given a few hours to prepare, they're all going to be in holes, not lying on the ground.

Marines have e-tools (small foldable shovels) that they can use to dig in defensive fighting holes, making the calvary charge almost useless and help minimize casualties against arrows (mostly just head and shoulder wounds); m203 grenade launchers; the .50 cal MGs would likely cut down 2 or even 3 mongols at a time due to achievable penetration; some weapons companies employ the mk19 automatic grenade launcher; rifle platoons employ disposable AT-4s (which can also be rigged as remote booby traps...it’s easy); 81mm mortar airburst rounds, SMAWs and javelin missiles would likely punch huge holes in the mongols’ lines before they get to within 800 yds; white phosphorous mortar rounds can help disorient the riders as they approach (that shit also burns); there’s also hand grenades; and lastly, night vision if the mongols are crazy enough to attack at night.

No modern battalion is gonna set up on the flat in a position for the riders to encircle them like that.

White phosphorus, Fighting holes, Wire, Terrain, Fragmentation Grenades, Claymore mines, Riot agents, Grass fires from using any on these weapon systems. ( Can't tell you how many times we stopped training because we set a range on fire) It'd be a hell of a fight on an open plain, My beloved Corps wouldn't engage on an open plain. We'd be dug in on a hill, or ridge line. 3rd Marines from 87 to 93.

As an active Duty U.S Marine Combat Engineer and a Combat Marksmanship instructor I could write a book about how inaccurate this is.... You're knowledge of how the military and more specifically the marines work is something of a Hollywood movie director.

Now do Australia defending against the Emu hordes.

Points of contention. USMC prides itself on requiring better marksmanship than the US Army along with excellent fire-discipline. Digging of fighting positions would being immediately and would take less than an hour for hasty fighting positions and would continue until improved to fortified positions with log bunkers, and two man fighting holes which can be done in less than a day with what a battalion would have on hand. Firing on massed cavalry as featured would result in misses against a point target often resulting in hits against nearby horses or men, thus the accuracy numbers used would be inaccurate to a degree that several orders of magnitude more hits would need to be considered. The high numbers of casualties in such a short time would cause many obstructions (the dead and dying) to riders at high speed resulting in additional casualties from collision with those obstructions.

1. It does not take long to build covered trenches. Dog fox-hole, fill stand bags, pile sandbags around edges, cover with logs or wood, and cover with dirt. You are practically immune to arrows. 2. It doesn't take a genius to find even remotely defensible terrain. River, woods, canyons, rocky areas, hills, etc. 3. It doesn't take too much prep to make anti-horse defenses. Barbed wire, logs, fences, punji sticks, knee deep covered pits, networks of rope or wire, just loose vegetation (to be set on fire), smoke, brush fires, etc. 4. The marines presumably have gasoline, cooking fuels, demolition charges, claymores, etc. Put these in a ring or in specific clear entry points. 5. You could easily pick a really defensible position such as a walled city, get locals to dig full out trenches, etc. 6. You could set-up diversionary positions. Fake uniforms or a few folks there firing, radios/loudspeakers making noise, etc. 7. The marines could simply attack the Mongol's in their camps at night. 8. Horses are not super-human. Smoke, explosions, etc. don't have to turn many since everyone afterwards runs into them. Muddy fields slowed horses. 9. I really think the coordination of the Mongols is super-human here. They can't time attacks over such distances and 100,000+ riders. Just logistics would take days to get everyone in position, and by then the marines could dig in -- or simple to go attack the Mongols at night. 10. Mongol knowledge of marines is beyond super-human. Capturing or seeing some scouts use some weapons gives them no real idea. They could easily try sending 1,000, then 10,000, then 25,000 from one side, etc. before understanding how bad it would be. It's a darn fine line that they seem to know exactly what they need to do, yet... try it. How do they know the marines can kill 10,000 easily but not 100,000? 11. I don't think the marine "circle" is terrible efficient for defense. Far better to have a star shape with forward posts -- with heavy frontal defenses. Machine guns then fire to the sides as riders pass through them in a line. Pretty much hard to miss. Such positions could easily be hidden. Perhaps a few fake posts with claymores. Horses didn't work in WW1. Modern weapons and tactics should be at least as good. No reason not to have log fences, wires/ropes, covered fox-holes, pit traps, etc. Or just pick a place not suitable to horses and make your stand there.

Further faults in this analogy. 1. Chinese fire sticks and rockets were never supersonic. When the advancing horses have supersonic missiles fly by they will hear a sonic boom from each projectile, something they will never have heard or been trained to deal with. And they will hear it oppressively causing them to stutter 2. Though the Battalion might not have mines, they would have Claymores. These are issued to the infantry for defensive operations and don't need Engineers. The Mongols would have no idea what they were and would be so densely packed at the point of discharge that the resulting chaos would break any charge. 3. Frontage, being about 2 metres wide for a horse a thousand men, if they were packed knee to knee, would be 2 km wide. A 4000 man charge which could not engage before 250 metres (I don't care what the range of the bow is, max range is never engagement range) would present a dense easy to hit target. They would be easy meat for the Marines and despite the Mongol bravery, you don't continue a charge when you lose a thousand men 1500 metres out. 4. US Marines do not loose off on full auto when they fire. They can hit a large body of men with controlled fire, single or double taps. The machine gunners, and there would be one in every section, would engage at a comfortable range of 1500 metres and could not miss. The closer the Mongols got the denser their force and the more impact the mortars would have. 5. Look at the battles that small unit US forces engage in at Afghanistan. There are plenty of examples where they are in fire fights and are alert, excited but not panicked. Also a lot of the clips show the men on semi automatic for controlled fire. 6. Why did you assume that the Marines would just form a straight firing line? Apparently they do not get to engage their own tactics where the line may be zig zagged to provide enfilading fire. Further you apparently are not allowing fox holes? 7. Finally, you seem to think that ten thousand archers firing arrows at say 15 a minute while on a panicky horse is better than say 20 machine guns firing 650 rounds pm from a fixed, protected position. 8. As I pointed out before. A man in armour that is suddenly thrown to the ground by a falling horse at 15 km per hour is not going to go unscathed. He has to deal with the displacement of his armour, the flailing limbs of his horse, the disposition of his personal weapons and the way his body hits the ground with that increased mass created by his armour. 9. The Mongol command structure watches the horses panic with the sound of enemy fire engaging at far greater range than they have ever experienced. He watches as four thousand men go down in a couple of volleys. Assuming he can overcome the issue with the horses, and if you threaten the harmony of the horse and rider you threaten the moral of the rider. Does he want to spend that many men in an uncertain venture. Even the Mongols could not afford to lose 60% of a 110,000 man force.

"the largest empire in history by area." The british: "that's where you're wrong kiddo"

Soviet Union vs China? 1960s during Sino-Soviet split?

the horses would panic since they never heard gun shots

You're penalizing Marines with combat stress but you're not penalizing the mongols who're watching MISSILES explode next to their horses? Interesting.

Wrong. The Gols would conclude these men were sent by Tengri, and give them horses to ride before Great Khan's own tumen. Then you'd end up with a few Ilkhanates bearing names like Moore, Kleinrimmer, and Brown. THAT would be the most frightening part of this scenario. Crayon populations wouldn't recover for at least a millenium.

He mentiond possible panic in the marines. So no panic in the horde? Grenade and mortor explosions? Horses not used to this would panic in mass. You would have rounds of all types overpenetrating, going through several riders or horses before stopping. They are designed to go through more then just meat. The Gatlin gun ended charging warfare 160 years ago. Same type of fire coming from hundreds of different angles. Complete meatgrinder for the mongols. Edit: The average infantryman carries around 220 rounds of ammo. So the battalion has roughly 200,000 bullets alone! That's not counting reserves of ammo, grenades, mortars, rockets etc.etc.etc...

at 400 meters the Marines would probably miss whoever they were aiming at, but at that point the Mongol horses would be so dense that the shots would hit *something*. A common tactic to break cavalry charges is to hit the front row of horses, forcing the ones behind them to stumble, fall or slow to move around, which makes them easier targets for follow on shot. Also, the Marines would dig fighting holes/bunkers and put overhead cover (sandbags/tree trunks) to make themselves essentially immune from plunging arrows they know the Mongols would have. Finally, claymores are available down to the squad level. Setting them out to the limit of the available wire (100 meters) for command detonation would shred. Shock and awe, indeed.

There are a lot of mistaken assumptions, and a lack of understanding about Marines in this. Marines are trained to accurately shoot at 500 yards. In fact the Germans launched an assault against Marines in WWI from 900 yards and found out that it wouldn't work as Marines were knocking them down from the get go. Marines also utilize claymore mines which cut down large swaths of attacking troops. Those are a few things right off the top of my head. "The only ones who know Marines are Marines and the enemy, everyone else have a second hand opinon." The speaker here has no idea about the difference between Marines and normal type soldiers and infantry. -Gunny T sends

I think they would have done much better. You failed to take into account the fact that the Marine positions would most likely be entrenched with sand bagged fox holes making their body armor much more effective against arrows and protecting more of them especially at closer ranges where the arrow arc would be flatter. With enough time other barriers meant to slow a horse charge could be applied like a wide deep trench in front of the manned positions. Even if these forward trenches weren't fully continuous they would force the Mongol army through more easily defensible channels or kill zones where they could focus fire. These would eventually become blocked by dead men and horses further complicating the Mongol advance. Snipers would also be targeting the commanders of the Mongols first and at long range effecting the efficiency of the horde and diminishing their capabilities as well as will to fight. Alexander the Great routed several forces much larger then his by attacking the command components and forcing them to retreat. The remaining forces would become disorganized and either flee or be completely overwhelmed by the better organized forces they faced. The effect of the mortar fire on the horses would be a lot more impactful. Mortars may not kill every warrior near the explosion but they don't have to. Injuries from a nearby shell explosion would often be sufficient to take a soldier or their horse out of the battle. A leg injury to a horse could make it unridable and an arm or leg injury to a warrior could make it hard for them to hold a melee weapon, fire a bow, or engage effectively. The mortar barrage would also be more disturbing to both men and horses. While they would have been exposed to gun powder weapons by then the use of it was not even close to what is now employed on a battlefield. The concussion from those mortar explosions would be enough to set horses into a panic and make controlling and possibly staying on them very difficult. I think the marines would have had far less Mongols getting close to them and the ones that did would be pretty rattled. Being out of ammo doesn't make a Marine a non lethal weapon either. They can use their bayonet and are very capable of killing in close quarters combat. Also every man in that battalion is a rifleman from medic to logistics and can fight on the line.

A lot of people are commenting on how inaccurate a depiction of marines this is, I'd just like to comment on how inaccurate the Mongols are. First, there is an assumption of an impossible level of command and control. I have a hard time believing a modern force could pull off a simultaneous omnidirectional charge like this never even mind a force that can only coordinate with visual signals and horns. Then there are these unridden horses being driven in the front that somehow don't panic and scatter. Then the force is assumed to take 25% casualties before even closing to 300 yards but doesn't break, which is already a rather dubiously low estimate of the casualties they'd take against mortars and machine guns in open ground. Finally, the assume effective range of 300 yards is absurdly long for firing from horseback. I could maybe believe getting an arrows within a ten yard radius while stationary and on foot. And then there is this nonsensical rate of fire, based off of what archers on foot could manage, not a moving horse. Bring the Mongols in to a much more reasonable 100 yards and halve the fire rate. Or don't bother because the Mongols broke when the Marines, who had been holding fire, opened up on them at 500 yards with an overwhelming volume of fire.

i like how in this video the mongolian army is bassicly completly fearless. which makes no sense after just a couple of thousends of them dying including seeing them mortering explosives and everything im pretty sure they would shit their pants and retreat and the horses would likely panic

The Marines would use force multipliers: burning gasoline moats, snipers, camouflage, obstacles for cover. No way would they fight out in the open in 100 to 1 ratio! At the very LEAST, they'd split their force with at least 20% snipers picking off Mongol leaders. Without leaders, who would the Mongols be fighting for? Yes, snipers would be fully camouflaged w flash and sound suppressors. They'd improvise as needed. If 200 Conquistadors with swords and medieval armor can defeat an army of 5000 with NO SERIOUS CASUALTIES, you can bet that the US Marines with modern weapons can do better!

This guy is making marines act foolishly for no good reason. As an 11B infantryman, they've be in a battalion perimeter and would have everything ranged out, and WOULD NOT waste ammo shooting at mounted riders at 700m, that's just stupid.

I don't agree with this. you forgot one very important piece of equipment that marines are issued. An e-tool. Terrain comes in to effect here, physical barriers narrowing the front on which they can attack. The area looks hilly with no trees, but I have never been. So jarheads dig in. Snipers and Mortars get elevation and increase their range, targeting groups and leaders. The short-range drones give a lot of advantage to the marines for targeting leaders and groups. They could possibly be completely dug in by the time by coming into range of any calvary (Calvary is neutralized over rough terrain -Digging random two-foot holes in the path of horses neutralize a direction that the horses can come through learned that overseas). Wounded horses cant gallop. Mongolians have no armor, marines do-dug in marines have very little exposed parts for arrows to hit. Marines have grenades most of the time 2-3 per person. 5.56 kills one person or wounds which is worse, 7.62 kills most of the time and you have a lot of 7.62 being carried by the marines but the 50 cals, they destroy shit, go through people. Ever seen a person come apart, that might throw the fear into some one who has never seen it.

Marine: *Kills Gianis Khan The marine with asian ancestry: *Mister* *Sarge* ..... *I* *don't* *feel* *so* *good*

Why is this situation set in the 100% best possible scenario for the mongols? A bunch of infantry against a full cavalry army on an open field? no, their would absolutely be high ground or bottle necks utilized

I think the effectiveness of the arrows were over exaggerated. Marines are trained in building defensive structures, the most basic being a foxhole. They would have been fighting from this structure. The arc of the arrows would have meant they landed on, for lack of a better term, wooden/log barriers atop their trench. Marines would have been firing through defensive slits. Each marine would have their own “pie” to cover on the battlefield, ensuring maximum coverage. They wouldn’t be prone or kneeling in an open field riddles by arrows, as this video suggested. The advantage that cover and concealment affords to a trained rifleman cannot be overstated when compared to horseback bows. I also think the obstacle of mountains of horse corpses were under exaggerated. Just look at stories of WWI trench warfare. They provide legitimate, tactics altering presence on the battlefield. The corpses would need to be cleared away before cavalry charges could even be considered. This isn’t a “horse corpse per square foot,” situation-all of the horses would be shot in roughly the same range, causing extreme concentration. Horses cannot gallop in those conditions. Also, if the marines were able to identify mongol officer based on insignia or formation, the snipers would be able to pick them off at 1,000 yards. Same with flag bearers. They could effectively disable mongol ability to communicate, coordinate, and adapt tactics. Marines’ superior optics, range, communication and intelligence has been underestimated. That being said, the Mongols would win easily by sending so many of their forces to be slaughtered that the marines either a.) run out of bullets or b.) fall to an advance so rapid and in such numbers that the enemy was forced to slither over hills of corpses until within melee range. Once the mongols get in the Marine entrenchment, the Marines are done.

Idk man. I’m a machine gunner in the marine corps and I don’t think the Mongols would stand a chance.

Your estimate ammo is way less than what Marines carry on a patrol

"Could a battalion of US Marines defea..." "Yes."

As an engineer organic to an infantry battalion, we do have certain engineering assets to seriously delay and hamper the movement of horseback troops. Channeling an enemy into designated Killing Grounds is our pride as engineers ( a dramatic example is the one shown in the movie 300 ) and Binkov forgot about them

I usually agree with your assessments, but I don't agree with this one. First, a disciplined Marine force would not start wasting ammo and ordnance outside of effective range. Within 600m, you simply cannot miss a wall. Even the worst infantryman can zero for range and fire at a wall. I say wall, because we are talking about a literal wall advancing with no gaps. At 300m, where the Mongols would theoretically begin their intensive barrage, a Marine rifleman literally cannot miss. A miss on something he is aiming at would still hit someone else. Additionally, Marines would not just stand in the open and wait to get shot at. They would fortify with anything they could find around them (including making sandbags to set on top of branches above them) that could stop incoming fire (arrows from above), dig trenches, and expose only a few inches of themselves to direct fire. Mortars and indirect fire would only be used when effective (when enemy is grouped up in close range, in this scenario). Range markers with windspeed/ direction indicators would be set in advance, and zeros would be set to whatever is determined to be the start of the kill zone). Also, within the kill zone, there would be so many dead horses, advancing Mongols would have to slow down or stop completely to avoid them, causing disruption in their charge/ advancing. This is assuming the worst terrain, flat earth. In the kill zone, Mongols slow down and are literally getting mowed down line after line, creating more barriers, and the .50's would be cutting through rows of Mongols like lasers. Sure, Mongols are warriors, but the psychological impact of seeing your 80% of your force being mowed down at 300m with only a few making it to 200m is going to make the most hardened warrior reconsider his life. Marines might not have enough ammo (didn't do the math) to smoke 40,000, but not even Genghis Khan himself would charge that and be willing to incur so many casualties.

Yes. Period. Without a single doubt. A Battalion of Marines would possess 32 M240B medium machineguns with roughly 2,000 rounds each team, 100 M249 light machineguns with 1200 rounds per automatic rifleman, 100 M203s with 18 HEDP rounds and 6 AP rounds each and basic load of 210 rounds of 5.56 each, another 500 or so M4 carbines with a basic combat load of 210 rounds of 5.56 and another bandolier of 300 rounds each giving them 510 rounds each. Every rifle squad would have 2 M18 claymore mines and company head quarters would have another five or so along with the ten battalion head quarters would have. Every line Marine carries 4 hand grenades. Giving them 2,600 40mm grenades, 2,000 hand grenades, 160,000 M240B rounds, 120,000 rounds of linked 5.56, 25,000 loose 5.56 rounds, 400 81mm mortar rounds, 400 60mm mortar rounds. A marine can effectively engage targets of opportunity at 300 meters which is 150 meters farther than the short composite bows used by the mongols on horseback. The M240B can effectively engage team sized elements out to 1200 meters, the M249 out to 800 meters. So, let's be honest. The marines have night vision devices, the CLU and TWS devices to pinpoint targets day or night through fog, smoke and dust. The Marines would go to high ground and dig fighting position and mark limits of fire for their medium and light machine guns. They would also begin shooting mongols off their horses from a mile and a half away with their 7 Barret 50 caliber sniper rifles. They would also deploy scouts using terrain and a method of camouflage the mongols would be unfamiliar with. Arrows cannot penetration through the ground into fighting positions and I highly doubt that after the first salvo of 81mm mortars destroying men and horse in a boom louder and with an orange flash brighter than anything they had ever seen. They would believe God himself was walking among them, reaping souls as his leisure. They would not continue any attack. They would seek reinforcements and come back with more men, horses and priests of their tribes to try and placate the Gods of war.

No defensive set up? No fox holes? No trenches? USA would not just fight like this.

Feel free to look up Polish cavalry charges against German tanks in the opening days of WWII. Tanks never fired their main guns. Their MG34's (8MM machine guns) destroyed entire cavalry formations. IN 1980 I carried an M60 machine gun with a published maximum range of 900M. The horde would be several riders deep by then and a burst of 7.62 x 51 would mean nearly every round would hit SOMETHING. 80% of the time it would be a be a horse. After 3 or 4 hits the horse falls down, directly infront of the riders behind him which means the horses behind who had already been hit once or twice would have to jump the the horse that fell literally a quarter second earlier, a chore for a good rider on a good day. Riders that got thrown would get stomped by the horses behind them resulting in WAAY more casualties than the gunfire itself. Just me and my crew had 1200 rounds with us, not including what extra company and battalion resupply could get us. At a distance of more than 600M teh projectiles would be coming DOWN at about a 15 degree angle which means the horses couldn't absorb as many rounds before the riders got hit. Also feel free to look up what happened during WWI when ANY kind of unprotected troops, infantry or cavalry went straight at a machine gun. What would happen to Khan if he lost half his army in one day? In this scenario the marines would likely be over run simply because they ran out of ammo. Khan would be seen as a fool who would end up getting killed by his own people....

Simple. The horses would be too spooked from the artillery and gunfire and most of the mongols would be amazed and scared straight from it, also I see a lot of people in the comments saying that snipers could pick the higher ups off, this is completely true, it even happened in world war 1.

you mentioned the grenade launchers not being used because of range, but when the mongols would be closer you forgot about them. hundreds of 40mm grenades would be devastating to the dense horselines

2 things: 1. Concertina wire has been carried by marines and it would not be inconceivable that they could be used to redirect charging horses into kill zones. Also, the wire would cause the horse corpses to pile up, making an even larger barrier. 2. Lances are great for dense masses of troops that can’t get out of the way, but the marines are in a loose formation. It’s not inconceivable that some could dodge.

What if a giant centipede armed with custard pies was attacked by a 45 foot tall stick insect mounted on a sharpened pogo stick?

But wouldn't the marines set up defenses and dig in? Set up trenches to break horses legs, wooden stakes to funnel horses into killzones?

As a former soldier, i have some trouble with the hit-precentage of the marines. you said that the AT and HMG's would cut down a horse a second, this i have some trouble with. Fiering several thousand rounds a minute combined, and with airburst from AT, into a shoulder to shoulder cavalary charge would kill thousands in the first minute. You got to remember that a bullet keeps going after hitting a man, and still, with a so dense target environment, much more of rounds will hit. Over to the distance, again, with such a target dense enviroment, you could start fireing much sooner with nearly all weaponsystems. Then there is the factor of horse behaviour from explosions everywhere, and the psyke of the mongols themselves, when atleast 10 000 of them are dead before they came into range of precision aim with the bow. Last you also have precision kills of mongol leadership with long range weaponsystems. I enjoyed the video, but i think this was a miss.

fun. Some major omissions though: The marines have entrenching tools. Horses are not used to mortar rounds, surprisingly, there's no mention of any panic on their side. Main point: The marines are very good at tactics. In this video, they behave like idiots. How about using that great wall right behind them, for instance :P

These are fun to ponder! You do not have a good understanding of how Marines fight tactically. Our use of interlocking fields of fire would cause much higher casualties, not to mention the kill-zones for small arms fire would be longer. All Marines are rifle-trained to hit man-sized targets at 500 yards (without optics) and and MANY are close to sniper-level shooters. Effective group range can be 700 yds. Grenade launchers can be shot effectively up to danger-close range. I did it, so I know. Every Marine could easily shield under their packs for arrows. Without going much further tactically, the Horde would break and flee from the instant, never-seen-before devastastion from a hail of motars. You mentioned panic, but it would be the tens-of-thousands of conscripted farmers and horses panicking. The sheer amount of dead horses would break up or make flank, if not stop a planned calvary charge. The bodies of all would be an obstacle course, slowing and funneling the hordes into interlocking fields of fire. If you didn't know, ALL Marines are taught and maintain proficiency with a rifle, no matter the rank or job. You left out almost 300 Marines that would be shooting in a situation like this. Horses will drop with one shot. And one more word... Grenades. This was fun.

Considering that the Mongols never saw that kind of firepower before and would have no knowledge of whats killing their men at such high numbers and at a rapid pace, plus the unfamiliar sounds of the rifles and grenades, as well as having no way of knowing the number of enemies they're facing nor their capabilities, they'd most likely retreat.

The problem with this scenario is that even Mongol armies will rout if afraid. It's very difficult to control an army....let alone a horde of 100,000... if 1/5 of that army is killed before even reaching their opponent. Lines will break and confusion and fear will set in as a mass rout of the front line begins. Mongol commanders would have to maintain extraordinary control of their soldiers or they face an uncontrolled retreat.

No Marine is going to fight out in the open.

The British had a bigger empire. What the Mongols achieved was the largest contiguous empire

The Western Front during World War 1 taught us what happens when massed cavalry units charge machine guns. Also, the accuracy numbers you listed assume that you are firing at single targets, not a mass of people on horseback. A bullet that misses it's target doesn't disappear, and when you have 40,000+ targets, even when you miss the dude you are aiming at, you're still probably going to hit SOMEONE. Finally, you forget about what would be a VERY important piece of equipment. Shovels. The common E tool. I believe you said 15 miles away. Mongols could cross 100 miles a day, assuming they traveled for 16 hours a day, that would mean they are traveling 6.25 miles per hour. Meaning the marines would have just over 2 hours to play with before the Horde arrived. A thousand marines would give cavalry a very bad day with 2 hours and some shovels. Horses have a tendency to break their legs when you force them to gallop over uneven terrain

Great theory. But the marines wouldn't stay where they arrived. They'd find cover, build a defensible position if they couldn't find one, and send out scouts and snipers to asses the enemy and terrain, maybe even take out a couple command staff. Maybe infiltrate the camp and lay down some explosives. Marines don't wait for a fight to begin, they take the fight to the enemy.

Really I think the mongols would be like “ooh what’s this? 1000 foot soldiers? let’s see what they’re about” and then probably ride up. Marines open fire with guns and mortars, mongols go “holy shit they’re wizards” and retreat to a safe distance. Assuming the mongols don’t just declare that area a no go zone, maybe they camp nearby and their leaders discuss what to do. This is the moment the marines need to sneak up and bombard the mongol camp with mortars. Done at night in the dark, they’d be invisible (doubt muzzle flash would be a problem as the mongols wouldn’t know to look for it, and it would probably be 5kms away and probably obscured from sight by something) I imagine this is basically the real version of this scenario and it leads to a few thousand dead mongols and the mongol horde getting the hell out of that area

The US Marines would surely build obstacles, including hidden sniper locations, booby traps, barbed wire (if available) as well as improvised body armor. Marines are trained to improvise under combat conditions, using any and all available materials/equipment. If the more modern forces had time, they'd use reconnaissance to find out the Mongol's superstitions and weaknesses to incite fear, using it against them (LOUD explosions and other horrifying sounds from PA systems, for example). Most likely, they'd be firing from trenches on hills or raised berms at the very least, likely with protective covers. They'd make use of snipers well placed in hidden locations. Also, steep ravines with sharpened stakes, possibly ignited with gasoline or other highly combustible fuels would be built around the main grouping of soldiers. They'd likely use lasers from their rifles to blind the Mongols, as well... The US Military would not be interested in making it a 'fair' fight, but, rather in using every and all tools at their disposal in as advantageous and devastating a way as possible! (Think 'shock and awe'.) Though the Marines would be at a great numerical disadvantage, they would counter with superior technology AND tactics! Having said as much, accuracy and ammunition would still be critical. Lastly, the Marines would likely build escape tunnels to prevent total destruction by the Mongol hordes. The Marines, using all the history and study of warfare available to them would have many advantages (IN ADDITION TO far superior weapons and technology) that primitive (though highly toughened) soldiers would not.

The question is, would the marines continue using conventional tactics or would they use horses to give themselves the option of retreat?

There are just too many things not being accounted for here. First of all, MG grazing fire has been historically proven (WWI anyone?) to decimate mounted cavalry. Both .50 BMG and 7.62 NATO FMJ rounds would pass completely through multiple enemies. With MG positions in place, the T&E would get locked in and belts would get linked together to alleviate the need for reloading. It would be a relatively simple matter of controlling fire rates to control the need for barrel changes. This isn’t accounting for Mk19 fully automatic grenade launchers that each Marine Co is likely to have. The Mongol horde in this scenario doesn’t pose a point target threat. It is an area target threat. The example shown also assumes the modern unit establishing a position with absolutely zero terrain or obstacle advantage. A simple triple strand concertina wire obstacle perimeter with an optional minefield emplaced around it would stop the Mongol horde dead in its track with minimal support from overwatch. Also, what BN doesn’t have it’s own motorpool? I was in an Airborne Army unit, and we still had enough vehicles to mobilize the entirety of our personnel. The reality is that if this battle were to take place, there would be a wall of Mongol corpses about 500-600M from the modern BN’s defensive position. That is the range where all U.S. military weapons would be very effective while still being out of reach of ranged Mongol weapons. The Mongol horde’s only hope of survival would be to steer clear of a defensive position held by a modern BN and utilize guerilla tactics.

You do realize if they are planning a stationary defense they would most likely have dug some form of foxhole which also includes overhead cover which would render those arrow volleys almost irrelevant. Just a thought.

I think you're understanding the devastation of dug in machine gun positions, the marines would use terrain to their advantage and emplace somewhere like a valley where they wouldn't be flanked and could mow down waves of cavalry. If the mongols did try to overwhelm them with a mass charge danger close mortar fire and infantry platoons should be able to repel it, as they did during the Korean war. Finally the marines would have a sniper section that could target key leaders and make it very difficult to make effective battle formations.

Historically any army that took 10% casualties retreated or surrendered. Killing 10,000 horsemen in a mass formation from even a lightly fortified position would be child's play with M2 Brownings, a claymore line, mortars, and M4s. A .50 would kill the first horse it hit and the 2 behind it, not to mention a horse is a huge target. Hitting a horse at 500 yards would be like hitting a man sized target at 100 yards... really easy even if moving laterally, there's so many just fire at the formation. Also where are you getting those accuracy numbers? I'd expect 75%+ accuracy with M4s in this situation. The Marines would establish a designated field of overlapping fire and allow the charge to advance with a specific range say 600-400 where the claymore line is and once that blows killing dozens per claymore the infantry, mortars, and machine guns will open fire on the faltered charge of panicking horses. The field of engagement would be covered in dead horses and riders, probably well over 1-2 thousand in the first 2-3 min. After that the Mongols would almost certainly retreat haven taken 4-5 thousand casualties in a 10-15 min engagement.

The Mongol horde didn't have 100,000 soldiers in one place at a time. The logistics of feeding that many men and horses (they would have several horses for every soldier so they could ride fast and swap to a fresh one) so it would be more like 20,000 to 30,000 at a time. The M4 carbine can hit point targets at 300 meters with a great amount of accuracy. The 240B medium machineguns on tripods can hit area targets at 1200 meters with ease.

With unlimited supply of ammunition and supplies marines will win. It would be a turkey shoot

Marines have the Claymore mine that can be set up to be set off by a trip wire but stock it is set up to be detonated manually by the soldier or marine. The battalion weapons platoon would be able to deploy anti personnel mines and the marine fighting positions would be prepared for mass arrow attack if the marines know their enemy and marines know their enemy whenever possible so they would’ve prepared their positions to be covered with barbed wire/concertina wire to funnel enemy forces into kill zones. If they had no concertina wire they would use the land such as positions in natural kill zones with spears in the ground again to force enemy combatants into small kill zones that would bunch up the hordes into tightly compact forces that can be decimated with .50 cal BMG and motar fire. The marines would put themselves into a position that would be a disadvantage to the enemy. Muddy swamps and hill tops to force horsemen off their mounts with kill zones again set up to force the enemy to attack the marines where the marines want to be attacked. Your assessment is also forgetting that one .50Cal or .30cal round can cause multiple casualties especially when forces are forced into tightly compact kill zones. Marines are also known for their ability to make every shot count and not wasting ammo. Marines have a way to use their sling to make their carbine part of them almost making each man a sniper. A marine night time raid would probably drive the enemy from the field especially if the marines use artillery simulators if they have any on hand. Tear gas or CS gas would also drive the enemy from the field and the Marines would certainly have that in hand and the horses would want to have nothing to do with even a small whiff of CS.

The Marines would do everything they could to not be caught on an open plain. Even a slightly better defensive firing position would make all the difference. And if your Marine companies were arrayed at weak points in the Great Wall they might be able to prevent the breaches altogether.

I’m here to tell you, a battalion of Marines has CS gas on them. Once they popped that on the Mongols, game over.

You also must consider the British vs African Tribes; their pucklegun and machine guns, they killed an invasion force of 10,000 men with about 5 guns in the time of about 30 mins.

Mongols: unlimited arrows, Marines: run out of bullets

The Marines, knowing they would be facing archers, would entrench, which would significantly change the casualty rate.

This video assumes a static defense on open terrain by the marines, which makes no sense. Ambush tactics and proper use of terrain would involve vastly different tactics. Also, you mention combat stress for the marines, but say nothing of the psychological impact on the Mongols of having mortar blasts nearby? when faced with explosions, it doesn't matter if they have foreknowledge, that's not the same as experience. A lot of Mongols would lose their nerve (nowhere near as disciplined as modern militaries) and that's not even mentioning the horses which would definitely panic and likely throw their riders

I think your underestimating the physiological effects of having people mowed down by automatic fire all around you, not to mention the effect explosions would have on the horses.

The assumptions used to determine outcome seem bazaar. Every defending commander in the world will use the terrain to their advantage. Why no ditches to deal with horses? Why assume limited ammo but unlimited arrows? Why assume the marines would not move around?

A pretty good analysis in ways, but I give credit to the critics. A lot depends on how long the Marines would have to prepare, and the nature of the terrain. Natural ground barriers could be improved, and I agree that the attack could be funnelled into kill zones. It is likely that the claymores could be integrated into these defenses. The use of drones for reconnaissance would give them the ability to plan a better defense than postulated. I don't remember any mention of the use of hand grenades in the closest stage of the final attack. I agree that morale is hard to postulate, but horses have to be trained to ignore the sound of gunfire, and a significant portion is untrainable in this regard. Finally, there is no calculation of support that the Marines might get from the Chinese, they might be useful as labor battalions for preparing the battlefield, and with sufficient time to prepare, some could be trained as auxiliary soldiers. If I were you, I would suggest re-writing this video in light of the well informed critics. You have done a pretty good analysis, but it could be improved. 🙂

You are wrong. In 2006 when I was stationed at Camp Lejeune NC our battalion. 3rd battalion 2nd Marines 2nd Marine Division. We have 998 Marines. Not counting officers and headquarters personnel. Over 1000 Marines vs 100k horse riding bow shooting short guys. I'm going to absolutely say the Marines will take a 10 percent loss. Our bomb buddies would be situated on the wall. While some squads would be on the ground. Other on the wall. Very deadly accurate at 500 to 1500 yards off. No chance in hell we lose. Even after we run out of ammo. We still pick up spears. Horses and bows. We are mostly very efficient at using archery technology and very effective at hand to hand combat.

Wouldn't the horses get scared from the 40mm's and mortart raining on them and just run away with the riders?

A marine corps infantry Battalion consists of three line companies with roughly $160 Marines each, though it most likely would have a fourth rifle company. It also has a platoon of tanks, a platoon of light armored vehicles, a platoon of reconnaissance Marines and artillery. So, if they have no tanks or artillery the still have 1000 riflemen, 24 light machine gun teams, 44 Javelin missile systems, 70 automatic rifles (M249machineguns), two 60 mm morters and one 81mm mortor per company and four 81mm mortor. . The Marines would set in a triangle shaped patrol base, most likely they would separate into four company patrol bases and set in a defense by digging a lazy W front to use naturally occurring interlocking fields of fire. Marines would have their body armor on. The dust would be negated by their thermal weapons sights.

Defensive earthworks would change this match up dramatically. Marines can move a tremendous amount of dirt when properly motivated.

Marines are trained to utilize the BEST tactics, NOT stand their ground like sitting ducks! If a battalion of US marines were to be attacked by a horde of 100,000, you can BET they'd choose or retreat to the most defensible positions! Marines also have the benefit of radios and can attack the horde's epicenter, it's generals that could easily be picked off by snipers, demolition experts, etc... In addition, the marines would counterattack at night, using their night vision equipment, silencers and flash-suppressors. The Mongols wouldn't stand a chance in real-life.

This scenario makes no sense 1000 Marines on flat open terrain, with no cover with no Vehicles, no Air Support, no Artillery, no Tanks, no ability to resupply. Against 100,000 men on horse back with bows and arrows. Of course the Marines will loose, not right away but after several waves they get over run once ammo runs out.

I saw an American man teleported back to medieval era beating up hordes of undead.

0:05 Um you are wrong, the Mongols were the largest CONTIGUOUS empire. The British Empire was the largest empire in history

why would the marines be sitting out in the middle of no where, highly unlikely scenario.

Uhm - Marines pride themselves on their marksmanship. At 9:08 - if a Marine rifleman consistently took a dozen rounds to hit something as large as a man+horse - even at max range? They would not *be* a Marine rifleman.

If the Marines are supplied with crayons, the Marines win.

A barbed wire circle and trenches would help a lot in this situation.

50% hits at 400 yards with scopes during qualification? Marines qualify at 500 yards and most have a hit ratio of far greater than 50%. And there really wouldn't be much combat stress as for most of this time the Marines would be in no danger of return fire.

Hmmm I think you're severely over estimating how effective the archers would be at shooting fully camouflaged and dug in marines. Also a big factor that needs to be addressed is morale. The vast majority of mediaeval and classical battles were over before casualties reached even a third of the over all force. You don't need to kill every individual soldier. Seeing tens of thousands of thier troops killed in minutes and not even being able to come to grips with the enemy would very likely cause a mass route in the Mongol forces LONG before the marines had to worry.

I heard you mention land mines, but I don't recall you mentioning claymores. Yes, an engineering unit would most likely be required for placement of anti-personnel and anti-tank mines, but infantry units are fitted with claymores for use at their own discretion, and Marines are artists with those things. You're looking at an aimed and directed 150M effective kill zone of ball bearing and/or machine-washer flechettes starting fifty feet away from the line and spaced about the same as the land mines you mentioned in your video. If the mongol lancers aren't 150M ahead of the archers by the time the claymores are fired, then both forces would suddenly take massive losses once they hit the fifty foot line. Even if the archers were safe by the time the claymores fired, they are one part of a two part weapons system; they could continue to harass the Marines, but without lancers, it would only be harassing fire, and that would be costly as the Marines could more easily, more quickly, and more effectively return fire. If the Mongols attacked from multiple directions in timed waves, then they could adjust tactics after seeing the claymores fired the first time, but that new tactic would require them to focus on one avenue of approach so as to overwhelm the claymore replacement or push the resource to exhaustion. Still, the Mongols tended to focus more on pressing all sides with equal pressure, which would tend to give them less time to adjust to the claymores as they would all hit at roughly the same time. Now, yes, there would be that forty thousand reserve force, but I would not be surprised to see them sue for peace because of Genghis's intellect. He was savage, but he was also brilliant, and it wouldn't be hard to imagine him trying to trade or even recruit the Marines to his force.

Usmc qualifies out to 500 yards. So they’re accurate on a man sized target at 500. A man and a horse at 700 would not be wasting rounds. It’d be relatively easy. Even the cooks could hit that, the secretaries too

US military has 50 cal machine guns so range is not an issue. Also, they would set out clamors in the parameter which would devastate the incoming hoard.

I’m disagreeing. I’d imagine this scenario there still is time for the marines to pick a location to defend dig in, them knowing they will be facing arrows they would put crude protection (logs) on top their fighting holes. 500 marines can dig those holes pretty quick the other 500 can dig possibly tens of thousands of much smaller gopher holes (leg breakers ) 100 yards out right when the horses be full steam. I’d also imagine they would have barb wire in their supplies use your imagination. The miss statistics aren’t taking into account a miss will probably be a hit even if it hits the wrong guy or horse. Belt feds are the reason cavalry charges stopped! Mines would be claymore types much more effective and actually designed for defense against wave attacks Id also speculate each platoon would have dozens each its not necessarily something they need engineers for. I’d also imagine they would have demolition type explosives to make IEDs.

two things that weaken this tactical assessment. (1) The accuracy and effectiveness of modern fire arms is vastly underestimated. You only have to see what British troops at Rorke's Drift did to Zulu warriors with single load lever actioned martini henry's to imagine how much worse it would be for the Mongols against modern rifles. Claymore mines (directionally ejecting 700 steel balls at rifle velocities) which are the ultimate cavalry busters are routinely used in the Marine and Army forces. And if you've ever seen a saw or 50 cal in operation doing 'beaten earth' you would not doubt the absolute carnage they would inflict from hundreds of meters out. See WW1 for examples of troops being mowed down routinely at 500+ meters. (2) Said marine force would not hunker down in an open plain against cavalry. That would be tactical fail numero uno. The marines would expect arrow storms just as the mongols expecting rifle fire drove in thousands of unmounted horses ahead to soak up fire. The marines could easily could easily make mantlets out of nearby wooden buildings or trees. They would certainly seek high or broken ground to defeat cavalry charges or they would make trenches, earth walls and cover them in wooden pikes as well as digging covered foxholes to almost entirely negate descending mongol arrow fire. Realistically the mongols could not defeat 1000 marines in outright battle. And suffering 50 to 70 % casualties would be beyond morale crushing for any army. They would break probably long before they hit such numbers. But... the most likely outcome is the marines initially defeat attacking mongols in detail but find themselves harassed and eroded piecemeal as they seek out more food and water in alternate positions assuming their ammunition doesn't ruin out. Mongols follow an sniper till the marines die or surrender. Logistics in the end always wins.

Nobody: Binkov: What if Mongols faced freedom, liberty, democracy and the bald eagle?

I love how he strips the marines of all their vehicles, artillery peaces, and everything a modern marine battalion actually uses.