Carlos Hathcock was a United States Marine Corps Gunnery Sergeant sniper with a service record of 93 confirmed kills
100 officers and 9000 enlisted men formed Marine EGA. My favorite image of the EGA
Two members of 101st Airborne “Screaming Eagles” - Vietnam War
Geronimo - Chiricahua Apache - no date
Flora Sandes (22 January 1876 – 24 November 1956) was the only British woman officially to serve as a soldier in World War I. Initially a St. John Ambulance volunteer, she travelled to Serbia, where, in the confusion of war, she was formally enrolled in the Serbian army. She was subsequently promoted to the rank of Sergeant major, and, after the war, to Captain."
Marines, you know it's true http://www.militaryringsonline.com/marine-corps-rings/ to custom design a marine corps ring.