Gays in the military: US Air Force Tech Sergeant Leonard Matlovich, a decorated veteran of the Vietnam War, appears in his Air Force uniform on the cover of Time magazine with the headline "I Am A Homosexual". He is given a general discharge, later upgraded to honorable.

Lesbian, gay, bisexual, transgender, and queer (LGBTQ) personnel are able to serve in the armed forces of some countries around the world: the vast majority of industrialized, Western countries including some South American countries, such as Argentina, Brazil and Chile in addition to other countries, such as the United States, Canada, Japan, Australia, Mexico, France, Finland, Denmark and Israel. The rights concerning intersex people are more vague.

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 gay people, 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. His case resulted in articles in newspapers and magazines throughout the country, numerous television interviews, and a television movie on NBC.