1941, 1942 ., 1944, 30s, acs, activities, air, air force, an- 30, app. snub, art, assault, asw, attack, battle, beach, bear, biplane, boats, bob, bomber, bt-42, bt-7, chapter, clouds, commander, construction, corps, database, defense, design bureau, destruction, detection, developer, dpls, enemy, explosions, far, fighter, fighter polutoroplan, finland, finnish, frequently, from, german, giuseppe rava., gun, i-15, il -4t, is-2, joseph stalin, land, later on, light, medium, men, modelka, moniker, monoplane, more, new, observations, one, pe- 8, period, picture, plane, removing, rendering, river, road, russia ., sea, ships, shooting, single, single-engined, sky, soviet, soviet union, t-34-85, tank, the world, torpedo, toys, trainer, trophy, tu- 142, tupolev, underwater, very, war, wharf, ww2, ww2., yak- 50