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 Canada, Japan, Australia, Mexico, France, Finland, Denmark and Israel. The rights concerning intersex people are more vague.

This keeps pace with the latest global figures on acceptance of homosexuality, which suggest that acceptance of LGBTQ communities is becoming more widespread only in secular, affluent countries.

However, an accepting policy toward gay and lesbian soldiers does not invariably guarantee that LGBTQ citizens are immune to discrimination in that particular society. Even in countries where LGBTQ persons are free to serve in the military, activists lament that there remains room for improvement. Israel, for example, a country that otherwise struggles to implement LGBTQ-positive social policy, nevertheless has a military well known for its broad acceptance of openly gay soldiers.

History has seen societies that both embrace and shun openly gay service-members in the military. But more recently, the high-profile 2010 hearings on "Don't ask, don't tell" in the United States propelled the issue to the center of international attention. They also shed light both on the routine discrimination, violence, and hardship faced by LGBTQ-identified soldiers, as well as arguments for and against a ban on their service.

History

In ancient Greece, the Sacred Band of Thebes was a military unit from 378 BCE which consisted of male lovers who were known for their effectiveness in battle. Same-sex love also occurred among the Samurai class in Japan, being practiced between an adult and a younger apprentice.

However, homosexual behavior has been considered a criminal offense according to civilian and military law in some countries throughout history. There are various accounts of trials and executions of members of the Knights Templar in the fourteenth century and British sailors during the Napoleonic Wars for homosexuality. Official bans on gays serving in the military first surfaced in the early 20th century. The U.S. introduced a ban in a revision of the Articles of War of 1916 and the UK first prohibited homosexuality in the Army and Air Force Acts in 1955. Canada formally persecuted LGBTQIA+ service members and public servants during the Cold War as part of the Anti-gay purges in Canada. However some nations, of which Sweden is the most well-known case, never introduced bans on homosexuality in the military, but issued recommendations on exempting homosexuals from military service.

To regulate homosexuality in the U.S. military, physical exams and interviews were used to spot men with effeminate characteristics during recruitment. These exams included having wider hips and the absence of a gag reflex in prospective soldiers. Both of these physical characteristics could get a man disqualified from service. Many soldiers accused of homosexual behavior were discharged for being "sexual psychopaths", although the number of discharges greatly decreased during wartime efforts.

The rationale for excluding gays and lesbians from serving in the military is often rooted in cultural norms and values and has changed over time. Originally, it was believed that gays were not physically able to serve effectively. The most common argument during the later 20th century focused more on military effectiveness. And finally, more recent justifications include the potential for conflict between heterosexual and homosexual service members and possible "heterosexual resentment and hostility."

Many countries have since revised these policies and allow gays and lesbians to openly serve in the military (e.g. Israel in 1993 and the UK in 2000). There are currently more than 30 countries, including nearly all NATO members, which allow gays and lesbians to serve, and around 10 more countries that do not outwardly prohibit them from serving.

The U.S. was one of the last developed nations to overturn its ban on allowing gays, lesbians and bisexuals to openly serve in the military when it repealed the Don't Ask Don't Tell policy in 2010.

Being LGBT in the military In the United States, despite policy changes allowing for open LGBQ military service and the provision of some benefits to same-sex military couples, cultures of homophobia and discrimination persist.

Several academics have written on the effects on employees in non-military contexts concealing their sexual orientation in the workplace. Writers on military psychology have linked this work to the experiences of LGBQ military service personnel, asserting that these studies offer insights into the lives of open LGBQ soldiers and those who conceal their orientation. Sexual orientation concealment and sexual orientation linked harassment are stressors for LGBT individuals that lead to negative experiences and deleterious job-related outcomes. Specifically, non-open LGBT persons are found to experience social isolation. In particular, these products of work related stress can affect military job performance, due to the high reliance on connection and support for the well-being of all service members.

In the United States, LGBQ soldiers are not required to disclose their sexual orientation, suggesting that some LGBQ service members may continue to conceal their sexual orientation. Studies suggest this could have harmful effects for the individual. A 2013 study conducted at the University of Montana found that non-open LGB US veterans face significantly higher rates of depression, posttraumatic stress disorder, and alcohol or other substance abuse than their heterosexual counterparts. These veterans also reported facing significant challenges serving while concealing their sexual orientation; 69.3% of subjects in the study reported experiencing fear or anxiety as a result of concealing their sexual identity, and 60.5% reported that those experiences led to a more difficult time for the respondent than heterosexual colleagues. This study also concludes that 14.7% of LGB American veterans made serious attempts at suicide. This rate of suicide attempts compares to another study of the entire American veteran community that found .0003% of American veterans attempt suicide.

Evidence suggests that for LGB service members in the United States, the conditions of service and daily life have improved dramatically following the repeal of Don't Ask, Don't Tell. Soldiers who choose to come out experience feelings of liberation, and report that no longer having to hide their orientation allows them to focus on their jobs. Support groups for LGB soldiers have also proliferated in the United States.

Discrimination In the US army, six states (Texas, Georgia, Louisiana, Mississippi, Oklahoma and West Virginia) initially refused to comply with Defense Secretary Chuck Hagel's order that gay spouses of National Guard members be given the same federal marriage benefits as heterosexual spouses, forcing couples to travel hours round trip to the nearest federal installation. Furthermore, some benefits offered on bases, like support services for relatives of deployed service members, could still be blocked. This changed with a ruling by US Attorney General Loretta Lynch in the Supreme Court on 26 June 2015 which ruled that Federal marriage benefits would be made available to gay couples in all 50 US states.

In 2013, legal changes were said to revert to practices to those before Don't Ask, Don't Tell, the National Defense Authorization Act contains language some claimed permitted individuals to continue discriminating against LGB soldiers.

From June 30, 2016, to April 11, 2019, transgender personnel in the United States military were allowed to serve in their preferred gender upon completing transition. From January 1, 2018, to April 11, 2019, transgender individuals could enlist in the United States military under the condition of being stable for 18 months in their preferred or biological gender. On July 26, 2017, President Donald Trump announced on his Twitter page that transgender individuals would no longer be allowed "to serve in any capacity in the U.S. Military", effectively reinstating the ban. The ban was overturned by President Joe Biden in 2021.

In Australia, Canada, Germany, Israel, Italy, the Netherlands, and United Kingdom, as of 2010, when civil partnerships became legal in the respective countries, military family benefits followed the new laws, without discrimination.

Fear of discrimination may prevent military service members to be open about their sexual orientation. A 2004 report stated that in some cases, in Belgium, homosexual personnel have been transferred from their unit if they have been "too open with their sexuality." , the Belgian military reserved the right to deny gay and lesbian personnel high-level security clearances, for fear they may be susceptible to blackmail. In 1993, a study showed that in Canada, France, Germany, Israel, the Netherlands and Norway, the number of openly homosexual service members was small, representing only a minority of homosexuals usually serving. Serving openly may make their service less pleasant or impede their careers, even though there were no explicit limitations to serve. Thus service members who acknowledged their homosexuality were "appropriately" circumspect in their behavior while in military situations; i.e. they did not call attention to themselves. As of 2010, in the Danish army, LGBT military personnel refrain from being completely open about their homosexuality. Until training is completed and a solid employment is fixed they fear losing respect, authority and privileges, or in worse cases their job in the Danish army. In 2010, the same updated study showed that in Australia, Canada, Germany, Israel, Italy and United Kingdom, no special treatment to prevent discrimination was in place in those armies, the issue is not specifically addressed, it is left to the leadership discretion. Commanders said that sexual harassment of women by men poses a far greater threat to unit performance than anything related to sexual orientation.

On the other hand, the Dutch military directly addressed the issue of enduring discrimination, by forming the Homosexuality and Armed Forces Foundation, a trade union that continues to represent gay and lesbian personnel to the ministry of defense, for a more tolerant military culture. Although homosexuals in the Dutch military rarely experience any explicitly aggressive acts against them, signs of homophobia and cultural insensitivity are still present.

Violence

Physical, sexual, psychological (harassment, bullying) violence faced by LGBT is a fact of life for many LGBT identified persons. In an inherently violent environment, LGBT people may face violence unique to their community in the course of military service.

According to a 2012 news article, while the Israeli Defense Force does not ask the sexual orientation of its soldiers, half of the homosexual soldiers who serve in the IDF suffer from violence and homophobia. LGBT soldiers are often victims of verbal and physical violence and for the most part, commanders ignore the phenomenon.

SAPRO, the organization responsible for the oversight of the Department of Defense (DoD - US) sexual assault policy, produces the "Workplace and Gender Relations Survey of Active Duty Member (WGRA)": The 2012 report does not have any paragraph studying the specific situation of LGBT people. The study focuses on men and women. The specificity of the violence faced by LGBT people is not considered.