In my postings, have I came across as though I had something against gays?
Yes.
The reason you come across that way is because your views of how gay people behave and what they are like could have been taken out of a homophobia 101 textbook.
It's all there: Their effeminate behavior, that they influence straight men, that you can tell who's gay from a mile away, that there is a gay "lifestyle", etc. The only one of your soldiers who you think may have been gay : Surprise - he's a problem, he has issues.
Your underlying reasoning is pretty much the same that you could hear from every homophobe, too. They all know how gays are based on the people who's entire being seems to scream "gay" regardless of their actual orientation. They don't know them personally or close, of course. Their social circle always seems suspiciously free from gay people.
No, I don't think you are homophobic - or at least you haven't said anything at all that would suggest that you are. But you'd appear to be homophobic to anyone who's been in this sort of discussion before - and outside of an anonymous Internet forum, a lot of people could never afford to give you the benefit of the doubt.
And the ones who'd meet you are soldiers in an army that to my knowledge still doesn't allow openly gay soldiers to serve, right? Your men cannot *tell* you because they are not allowed to tell. So, yes, it seems entirely reasonably that they would talk about past girlfriends and try to find girls very, very openly.
It works, too. I am not running around hitting on women openly because I am just too shy - and you'd be amazed at the people that conclude I am gay. I know there must be other reasons but I couldn't tell you what they are. Gay people thought I was gay. Heck, I managed to hang out with LGBT groups with both sides being utterly oblivious to the fact that something just went utterly wrong somewhere. (Okay, so I have no eye for that sort of thing at all - it took me a year or so to pick up on the fact that my best friend was gay. She never said anything assuming I knew, and I just never saw her with anyone and - frankly - being unable to give a toss either way never wasted a thought on it.)