The Service Flag
The Service 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 for the duration of such hostilities.
How to Display the Service FlagThe Service Flag is an indoor flag and should be flown facing out from the front window of the home or organization. If the U.S. flag is also displayed with the Service Flag, the U.S. flag should be of equal or greater proportions and should take the place of honor above the Service Flag.
If a gold star is added to the Service Flag, it should take the position of honor and be placed over the blue star that is positioned closest to the staff. The gold star should be smaller than the blue star to create a blue border surrounding the gold star.