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 women in World War II the director of the SPARs. The first five African-American women entered the SPARs in 1945: Olivia Hooker, D. Winifred Byrd, Julia Mosley, Yvonne Cumberbatch, and Aileen Cooke. Also in 1945, SPAR Marjorie Bell Stewart was awarded the Silver Lifesaving Medal by CAPT Dorothy Stratton, becoming the first SPAR to receive the award. SPARs were assigned stateside and served as storekeepers, clerks, photographers, pharmacist's mates, cooks, and in numerous other jobs during World War II. More than 11,000 SPARs served during World War II. The Army established the Women's Army Auxiliary Corps (WAAC) in 1942, a noteworthy year because WAACs served