T-13 tank destroyer. Belgian armor was woefully insufficient in both quantity and quality when Germany invaded in 1940. It's value was further reduced by defensive doctrine that dispersed their armored forces in so called "penny packets." The T-13 was a Vickers-Carden-Lloyd tankette with a 47mm anti-tank gun mounted in a fully travers able turret. Although too few in number to be effective, they did mount a more powerful gun than the Panzer I and II.
Gun Carrier Mk.I (1917) Upon the invention of the tank, the British realized that artillery would not be able to keep up with the speed of modern warfare. The Gun Carrier used components of a Mk.I tank and carried a standard artillery piece. While never used in the Great War, the Mk.I created the model for the self- propelled artillery of WWII- a standard artillery piece in a semi-armored compartment atop a modified tank chassis.
The T30 Heavy Tank was a World War II American tank project developed to counter new German tanks, such as Tiger I, Tiger II, and the Jagdtiger or Soviet heavy tanks, such as IS-1 or IS-2. It weighted 142,000 pounds, had a 155mm gun and 11 inches of armor on the turret.
The Tiger-Mörser, 38 cm RW61 auf Sturm (panzer) mörser Sturmmörser Tiger or Tiger, best known as Sturmtiger or Sturmpanzer VI, was a German assault gun of World War II, built from Tiger I chassis and armed naval SturmMörser RW61 a howitzer, 5.4 L 380 mm. Its main task was to provide fire support to infantry troops in urban combat. Only 19 units were manufactured from Tiger tanks damaged.
American Tank Fords a River - Members of the 5th Mechanical Division ford a river in a tank, Can Lo River, south of Con Thien, Vietnam. 1968 - The M48A3 battle tank was the heaviest tank used in vietnam. It had a crew of four, was armed with a 90mm cannon with a coaxial .30-inch machine gun and an externally mounted .50-inch machine gun.