A beret flash is a shield shaped embroidered cloth or metallic insignia attached to a stiffener backing of a military beret. The flash attached to the stiffener is worn over the left eye of the wearer with the excess cloth of the beret folded and pulled over the right ear giving it a distinctive shape.[1][2] The embroidered backgrounds of the Army beret flashes represent the approved distinctive heraldic colors of the unit to which they are assigned[3] while the Air Force's represent their Air Force specialty code (AFSC). -- wikipedia.org (https://en.wikipedia.org/wiki/United_States_military_beret_flash)
