The flag of the United States Marine Corps (also known as the standard or battle color) is the flag used to represent the U.S. Marine Corps, as well as its subsidiary units and formations.
The official flag is scarlet with the Corps emblem in gray and gold. It was adopted on 18 January 1939, although Marine Corps Order 4 had established scarlet and gold and the official colors of the Corps as early as 1925. The indoor/parade version is bordered by a gold fringe while the outdoor version is plain. It measures 55 inches (140 cm) on the hoist and 62 inches (160 cm) on the fly. In addition to the multi-colored battle streamers (measuring 3 feet (0.91 m) by 2 3⁄4 inches (7.0 cm) wide) affixed to the top of the staff, the staff itself is covered with sterling silver bands engraved with the names of conflicts in which the Corps has been engaged.