1940, activities, airport, and, anti-tank gun, apc, arr, art, attack, au val, basic, bob, bomber, btr- 60p, cartridges, doctrine., far, fighter, forest, german, il -4t, machine, medium, men, modification, monoplane, pe- 8, pencils, picture, plane, quiet, rendering, replacement stores, russia, sea, ships, single, single-engined, skiing, sky, snow, soviet, special, sports training, strokes, swimming, t- 34-76, tank, tankk, the field, torpedo, trainer, transport, war, watercolor, weapon, winter, ww2, ww2., yak -6m, yak 52, yak- 11, yak- 50, yak- 52, zis -3