The B-17, arguably World War II's most famous heavy bomber, first flew on July 28, 1935, before a crowd of reporters eager to see Boeing's new bomber take wing. It was dubbed the "Flying Fortress" by the members of the press in attendance because of its (at least for the time) heavy defensive armament.

The Third Battle of Kharkov was the last major strategic German victory of World War II. Kharkov had originally been captured on October 25th, 1941, but had fallen to the Soviets in February 1943, following the German defeat at the Battle of Stalingrad.

The Yamato class battleships were battleships of the Imperial Japanese Navy (IJN) constructed and operated during World War II. Displacing 72,000 long tons (73,000 t) at full-load, the vessels of the class were the largest, heaviest, and most heavily-armed battleships ever constructed. The class carried the largest naval artillery ever fitted to a warship, nine 460-millimetre (18.1 in) naval guns, each capable of firing 2,998-pound (1,360 kg) shells over 26 miles (42 km).

The first generation T-34 medium tank made its debut in combat during the summer of 1941, when the Wehrmacht launched its invasion of the Soviet Union. The T-34 easily outclassed the German PzKpfw III and IV models, thanks to its hard-hitting 76.2mm main gun, thick frontal armor, wide tracks, and overall superior mobility.

Design on the KV-1 heavy tank began in 1938, with the intention that it should be the successor to the T-35 heavy tank. The first models of the KV-1 were field-tested during the Red Army's disastrous 1940 campaign in Finland.

The Elefant (Elephant) stemmed from the Porsche design for the PzKpfw VI Tiger. Henschel was awarded the contract for the new tank, but it was decided to use the Porsche design as a tank destroyer. Hitler demanded that the new vehicle be ready for the 1943 offensive on the Russian front, so development was rather hurried.