Trending

These 18 countries allow transgender people in their militaries

The shoulder insignia of an Australian soldier is seen at the Williamson airfied in the Shoalwater Bay Training Area as part of Battle Group Pegasus on July 12, 2017 in Rockhampton, Australia.

In a series of tweets Wednesday, President Donald Trump said transgender people will be barred from serving in the U.S. military "in any capacity."

» RELATED: Trump: Transgender people won't be allowed in the military

“Our military must be focused on decisive and overwhelming victory and cannot be burdened with the tremendous medical costs and disruption that transgender in the military would entail,” he wrote.

In 2015, the National Center for Transgender Equality estimated 15,000 trans people served in the U.S. military.

>> Read more trending news

The Pentagon ended the ban on transgender people in the military last year, placing the United States in the company of at least 18 other countries that allow trans people to serve in their militaries, according to a 2014 report from the Hague Centre for Strategic Studies.

» RELATED: QUIZ: How well do you know transgender Americans?

Researchers behind the "LGBT Military Personnel: a Strategic Vision for Inclusion" report analyzed policies regarding LGBT inclusion in more than 100 countries and ranked them based on four principles: admission, tolerance, exclusion and persecution — each determined by a total of 19 different indicators, including transgender personnel.

  1. Australia
  2. Austria
  3. Belgium
  4. Bolivia
  5. Canada
  6. Czech Republic
  7. Denmark
  8. Estonia
  9. Finland
  10. France
  11. Germany
  12. Israel
  13. Netherlands
  14. New Zealand
  15. Norway
  16. Spain
  17. Sweden
  18. United Kingdom

» RELATED: Trump breaks tradition, doesn't recognize LGBT Pride Month

But even in those countries that researchers found inclusive to trans military members, several have set specific policies regarding trans personnel.

For example, in the United Kingdom, trans individuals should have finished transitioning before they serve.

It's similar in Belgium, where policies state a person must undergo surgery and sterilization for the military to recognize their identified gender.

Australia’s Air Force, on the other hand, offers assistance in transitioning.

Read the full report from the Hague Centre for Strategic Studies.