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,
Tanks in World War II with a 75 mm main gun, was designed, but saw no service with Italian forces as it became ready at the time of the Armistice of Cassibile with the Allies, after which the Germans took over production, and used roughly one hundred of them. Another tank design, the Fiat M16/43, was developed to match the British cruiser tanks but work on it was stopped when the Axis was pushed out of North Africa in May 1943. The Fiat-Ansaldo M11/39 medium tank was used from 1940 through the early period of World War II. The M11/39 was developed as a "breakthrough