American military technology during World War II US cruisers and battleships had their guns directed using information gathered from the ship's radar. American military technology during World War II American military technologies developed during World War II became more advanced and specialized as the war progressed. The technologies produced ranged in complexity from relatively simple items such as small arms and armored vehicles, including tanks, to more complex items such as the atomic bomb. The latter, produced under the secretive Manhattan Project, proved to be an incredibly powerful weapon that revolutionized warfare and was used to end the war. Other technologies, such as the M4 Sherman tank,
Medium tank battle tank in most countries. The first tanks to carry the name Medium appeared in the First World War with the British Medium Mark A "Whippet". It was smaller and lighter than the British heavy tanks and only carried machine guns. The medium tank doctrine came into use in the interwar period. Its existence outlasted the super-heavy tank and heavy tank and gradually transitioned into the main battle tank. Medium tanks of the interwar period included the British Vickers Medium Mark II and the Soviet multi-turreted T-28. In the period leading up to World War II, the British stopped using