The Service flag, also called the Blue Star Flag, is an official banner authorized by the Department of Defense for display by families who have members serving in the Armed Forces during any period of war or hostilities the United States may be engaged in. Each blue star on the flag represents a service member in active duty. The Blue Star Flag is beautifully displayed in this stunning pin decorated with red, white, and blue pavé crystals. Perfect gift for our military families. Pin measures 1 1/2" x 1".