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,
American Theater (World War II) Bay Area underwent a series of alerts: American Theater (World War II) The American Theater describes a series of mostly minor areas of operations during World War II. This was mainly due to both North and South America's geographical separation from the central theaters of conflict in Europe and the Pacific. Thus, any full-scale threat by the Axis Powers to invade the continental United States or other areas was considered negligible, allowing for American resources to be deployed in overseas theaters. This article includes attacks on continental territory, extending into the ocean, which is today under the sovereignty of Canada,