Knee to knee refers to cavalry being so close that the knees are against one and other. Shoulder to shoulder is the same but with infantry

This is about king carolus rex or Charles the 12th of sweden he took the throne at the age of 15 years old in 1697 i recommend you watch sabaton history where they go in depth about the history and a little about the song itself

This absolute king of memeable Sabaton songs have to be The Winged Hussars.

Not really trench coats 😁 That would be the Carolean style military coats, ca 1700.

To check out a great live of this great song, in English... see Live at Wacken 2019 w full men's choir. Sabaton Forever channel

not gonna bully u but maybee a bit of preparation before u start:) The choirs in this song is so heavy