In my experience in Israel (where no one actually gives a shit if a soldier is gay), I can say that I've met some absolute warriors, in top commando units, who are gay, and who were respected for their fighting abilities. Their sexual orientation was completely immaterial to the way they were treated in their units. Most everyone I know would rather serve with a barrel-chested freedom fighter who happens to be gay, than with a jack-off who happens to be straight.
This article available online at:
http://www.theatlantic.com/international/archive/2010/02/gay-people-know-how-to-fight-like-hell/36706/
