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,
Belgian combat vehicles of World War II of waiting for the other tanks to arrive the Belgian army created the T-13 B3, also armed with a 47 mm C.47 gun. A squadron of ACG-1 was mobilised in 1939 but only 8 could be made operational of those in storage. The 47 mm main gun in the ACG1 was the same anti-tank gun then in service with the Belgian Army. The Belgian army had 75 Renault FT tanks (of World War I vintage) at the start of World War II. The Belgian Army had two types of FT tanks, the "Char canon" armed with a short 37 mm