In the 1950s, the beret was adopted as the default headgear for the service uniform. The color of the air force beret was blue-gray; armored corps, artillery, and special operations personnel wore a black beret.
During the 1950s, the beret was adopted as the standard headgear for military uniforms.  The Air Force beret was blue-gray in color, while armored corps, artillery, and special operations personnel wore black berets.