" challenger 2 ", 1939-1940, acs, anti, art, artillery, attack, averyanov alexander, background, battle, challenger 2, class, doctrine, fight, fire, grass, gun, history, infantry, installation, it's like the t-72, june 1812, m10, mbt, men, military equipment, military historical reconstruction ., period, picture, power, russia, second, self-propelled, snow, soldier, soviet-finnish war, stryker mobile gun, t-72b, tank, tank destroyers, to the occupation of paris, uniform, uniforms, united states, vegetation, view, war, warriors, weapon, winter, world