Tags: Weapon.
The 120 mm Gun M1 was the United States Army’s standard super-heavy anti-aircraft gun complementing the smaller and more mobile M2 90 mm gun in service. Its maximum altitude was about 60000 ft (18000 m) which garnered it the nickname the stratosphere gun. The 120 served primarily in static defensive roles although it had been designed to be mobile. One battalion the 513th AAA Gun Battalion did make it to the Philippines in February 1945 although they never fired their guns in anger.
