The Landkreuzer P 1500 Monster was a German pre-prototype super-heavy self-propelled gun designed during World War II, representing the apex of the German extreme artillery designs.[citation needed]
 P 1500 monster 800mm shell

P1500 campared to P 1000 and                                                                                                                 other tanks

The Renault FT (frequently referred to in post-World War I literature as the FT-17, FT17, or similar) was a French light tank that was among the most revolutionary and influential tank designs in history. The FT was the first production tank to have its armament within a fully rotating turret.^{[note 1]} The Renault FT's configuration – crew compartment at the front, engine compartment at the back, and main armament in a revolving turret – became and remains the standard tank layout. As such, some historians of armoured warfare have called the Renault FT the world's first modern tank.^[2]

Over 3,000 Renault FT tanks were manufactured by French industry, most of them during 1918. Another 950 of an almost identical licensed copy of the FT (the M1917 light tank) were made in the United States, but not in time to enter combat.

The M4 Sherman, officially Medium Tank, M4, was the most widely used medium tank by the United States and Western Allies in World War II. The M4 Sherman proved to be reliable, relatively cheap to produce, and available in great numbers. Thousands were distributed through the Lend-Lease program to the British Commonwealth and Soviet Union. The tank was named by the British for the American Civil War general William Tecumseh Sherman.

No. built	49,234, excluding prototype[2]

Tiger

Leonardo Da Vinci's tank concept (15th century)

"Karl-Gerät" (040/041) (German literally "Karl-device"), also known as Mörser Karl, was a World War II German self-propelled siege mortar (Mörser) designed and built by Rheinmetall. Its heaviest munition was a 60 cm (24 in) diameter, 2,170 kg (4,780 lb) shell, and the range for its lightest shell of 1,250 kg (2,760 lb) was just over 10 km (6.2 mi). Each gun had to be accompanied by a crane, a heavy transport trailer, and several modified tanks to carry shells.

Seven guns were built, six of which saw combat between 1941 and 1945. It was used in attacking the Soviet fortresses of Brest-Litovsk and Sevastopol, bombarded Polish resistance fighters in Warsaw, participated in the Battle of the Bulge, and was used to try to destroy the Ludendorff Bridge during the Battle of Remagen. One Karl-Gerät has survived and the remainder were scrapped after the war.

No. built	7

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