P47D Thunderbolt1:32 scalemodel from Trumpeter.The P-47 proved to be a formidable fighter-bomber due to its good armament. Power came from a Pratt & Whitney R-2800 Double Wasp two-row 18-cylinder radial engine producing 2,000 hp (1,500 kW). The armament was eight .50 caliber (12.7 mm) "light-barrel" Browning AN/M2 machine guns. The P-47 gradually became the USAAF's primary fighter-bomber, by late 1943, early versions of the P-47D carrying 500 lb (230 kg) bombs underneath their bellies, mid production versions of the P-47D could carry 1,000 lb (450 kg) bombs and M8 4.5 in (115 mm) rockets under their wings or from the last version of the P-47D in 1944, 5 in (130 mm) High velocity aircraft rockets (HVARs, also known as "Holy Moses"). From D-Day until VE day, Thunderbolt pilots claimed to have destroyed 86,000 railroad cars, 9,000 locomotives, 6,000 armored fighting vehicles, and 68,000 trucks.