Leonard Matlovich

Technical Sergeant Leonard Phillip Matlovich was an American Vietnam War veteran, race relations instructor, and recipient of the Purple Heart and the Bronze Star. He was the first gay service member to purposely out himself to the military to fight their ban on gays, and perhaps the best-known openly gay man in the United States of America in the 1970s next to Harvey Milk. His fight to stay in the United States Air Force after coming out of the closet became a cause célèbre around which the gay community rallied.

Source: Wikipedia