" dora ", " empress maria ", "mouse", 1938, 305 mm, 807 mm, a39, army, art, artillery, artillerymen, assault, battleship, bob, caliber, cannon, dora, from the sunken, gauge, germany, gun, men, panzerkampfwagen viii, picture, rail, self-propelled artillery, sky, soldiers, super-heavy, superheavy, system, tank, the army, tm- 3-12, tortoise, train, unique, with a tool, year, «maus»