The American 90 mm family of guns served as primary heavy anti-aircraft and anti-tank guns, playing a role similar to the renowned German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 88 mm gun

88 mm gun

The 88 mm gun was a German anti-aircraft and anti-tank artillery gun from World War II. It was widely used by Germany throughout the war, and was one of the most recognizable German weapons of the war...

. They were the US's primary anti-aircraft guns from just prior to the opening of World War II into the 1950s when most AAA was replaced by missile systems. As a tank gun, it was the weapon featured on the 90mm Gun Motor Carriage M36 and Heavy Tank M26 Pershing

M26 Pershing

The Heavy Tank M26 Pershing was an American heavy tank briefly used in World War II and in the Korean War. It was named after General John Pershing, who led the American Expeditionary Force in Europe in World War I....

, as well as a number of post-war tanks.
Prior to World War II, the primary US anti-aircraft gun was the 3-inch M1918 gun

3-inch M1918 gun

The 3-inch M1918 gun was a United States 3-inch anti-aircraft gun that entered service in 1918 and served until it was finally superseded by the 90 mm M3 gun just prior to the opening of World War II...

 (76.2 mm L/50), a widely-used caliber for this class of weapon.