naval ensign
maritime flag used for national identification of warships
flag of the United States Coast Guard
flag representing the United States Coast Guard
Pine Tree Flag
Revolutionary-era flag
Gadsden flag
historical American flag depicting a rattlesnake and the words "Don't Tread on Me"
battle ensign
large war ensign which is flown on a warship
Jolly Roger
Pirate flag
Russian Navy Ensign
blue saltire on a white field