Pin-on metal Air Force Officer rank insignia is offered in two sizes, Full and Miniature.
As Field Grade Officers, Colonels wear the Full-size pin-on metal rank insignia on the left side (viewer’s right) of a Flight Cap featuring a blue and silver braid along the overlapping edge. Oriented so the eagle is facing forward and the insignia is roughly centered vertically between the braid and the bottom of the cap, the insignia is placed so that its foremost edge is 1-1/2 inches from the front crease of the cap.
The Miniature version is authorized for wear on the berets worn by Combat Rescue Officers, Special Tactics Officers, and Weather Parachutists. Miniature rank insignia are worn centered immediately below the beret flash, with the bottom edge of the rank device level with and immediately next to the top of the black border trim. The flash is to be more than 1/8” above the metal rank insignia.