Ключевые слова: army, assistance, battle, battleship, caterpillar, civil defence, danger, day, dirt, driving, dust, empty, fighting, gun, headlight, headwear, heavy, history, horizontal, illustration, large, machinery, metal, military, navy, no people, protection, rusty, security, side view, steel, sunlight, sunset, tanks, technology, transportation, war, warship, weapon, wheel, wilderness, working, world,