Usaf Roundel White — 2 museum-grade prints in this palette. Bell Aircraft's P-39 design placed the Allison engine behind the pilot with a driveshaft running under the cockpit to the nose — a layout that baffled American pilots accustomed to conventional fighters but suited Soviet low-altitude tactics on the Eastern Front. More Airacobras went to the USSR via lend-lease than served in USAAF squadrons; Soviet aces including Aleksandr Pokryshkin extracted legendary results from the type against German ground attack and bomber formations. The P-63 Kingcobra represents the apex of Bell's mid-engine fighter family — an airframe designed in America but defined by Soviet service on the Eastern Front. Lend-lease deliveries supplied regiments that valued the type's armour, cannon armament, and low-altitude performance against German ground forces.