Mouwembleem Anti Aircraft Command (Sleeve patch Anti Aircraft Command)

During World War II, US Army anti-aircraft systems were quite competent. Their smaller tactical needs were filled with four M2 .50 caliber machine guns linked together (known as the “Quad Fifty”), which were often mounted on the back of a half-track to form the Half Track, M16 GMC, Anti-Aircraft. Although of even less power than Germany's 20 mm systems, they were at least widely available. They were also used to help suppress ground targets. Their larger 90 mm M2 gun would prove, as did the eighty-eight, to make an excellent anti-tank gun as well, and was widely used late in the war in this role. Also available to the Americans at the start of the war was the 120 mm M1 gun stratosphere gun, which was the most powerful AA gun with an impressive 60,000 ft (~18 km) altitude capability. The 90 mm and 120 mm guns would continue to be used into the 1950s.