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,
The war to end war to war. Wells used the shorter form of the phrase, "the war to end war", in "In the Fourth Year" (1918), in which he noted that the phrase had "got into circulation" in the second half of 1914. In fact, it had become one of the most common catchphrases of the First World War. In later years, the term became associated with Woodrow Wilson, despite the fact that Wilson used the phrase only once. Along with the phrase "make the world safe for democracy", it embodied Wilson's conviction that U.S. entry into the war was necessary to preserve human freedom.