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,
German tanks in World War II German tanks in World War II Nazi Germany developed numerous tank designs during World War II. In addition to domestic designs, Germany also employed various captured and foreign-built tanks. By doing this Germany saw their tanks grow from "tiny five ton packages to one hundred-ton monsters". The German tank force was a success due to tactical innovation more than tank quality. Using so-called ""Blitzkrieg"" tactics, Guderian, Paul Ludwig Ewald von Kleist and other field commanders such as Rommel broke the hiatus of the Phoney War in a manner almost outside the comprehension of the Allied — and, indeed, the German