US Army Flash
Description: The selected Army flash is based on the National colors, white stars on a blue field, which were carried by the Continental Army through the Revolutionary War and present at the victory of Yorktown.According to historical references, the flags used by the Continental Army were "blue". The field flag of the Commander-in-Chief of the Continental Army was light blue with thirteen stars. Other flags of the same time period were dark blues with thirteen stars.

Symbolism: The blue background is symbolic of the union of the United States flag and the thirteen stars represent the original colonies.Background: The beret flash was approved on 20 Nov 2000.
 - US Army Institute Of Heraldry
Own work
Gigillo83