of course it has no place in the fluff, especially if it's homosexual

And actually the idea of homosexual male still being a male, virile and everything, and specially in the army, is very deranging to most people, specially military.
However, while the military world tend to be quite homophobic (necessary machismo), statistics anonymously gathered in confined "male only" space (navy, specially submariner) tend to show a different picture. And there is no reason to suppose that homosexuals would be less efficient as military people.
I must admit I suspected I might derange quite a few people by speaking seriously about homosexuality in the military, but actually this is quite on topic. I am not implying homosexuality of anyone here, military or not, but then again, if you take what I was saying as an offence, *You* might look homophobic to me.
You don't have to clarify your sexual preferences Legion 4, I don't remember implying anything about american veterans in my previous post

I merely stated that homosexuality was probably no rarer in army than in the civilian population, and as until very recently it was a mono-genre organization, possibly more frequent.
Specially, as, as you said, testosterone is the stuff of aggression AND the stuff of libido.
Anyone who would maintain that homosexuality doesn't exist in armies would be just as credible as Mahmoud Ahmadinejad when he maintain that it doesn't exist in Iran. I believe the current statistic is something like 1 or 2% of the population. Those would be the people actually realising their homosexuality. In any group larger than a few hundreds of people, say a thousand, it would be preposterous to suppose that "homosexuality doesn't exist here".
I don't think GW would ever want to imply anything such as this, even if they had a joke long time ago when the intended public was adult and the joke restricted to people at least a little versed in poetry. It is not a subject that usually pass easily with people collecting toy soldier in general. But SPECIALLY because sex is a taboo thing when speaking about games, and homosexuality a taboo thing when speaking about soldiers, I like to envision marines, when they have romances, to have romances with other marines.
Specially as male friendship, and the customs and gesture of it in the middle age, specially among knights and monks - both archetypes inspiring the SM archetype in GW universe - was sometime quite ambiguous or even borderline compared to the vision we have of it now.
The idea of Uriel Ventris and Pasanius as lovers (possibly platonic) does come really easily to the mind, for example. At least for me, but I realise I might not think of such things in the way most of us toy-soldier collecting people do

Understand ... and yes, while I was in the Army for 10+ years, I only ran across 2 or 3 ... I basically ignored it ... but eventually someone called them on it much later, I had heard. I was not concerned about their sexuality, but as long as they did their job and didn't cause any trouble ... I really didn't care. Which is all I asked of any soldier. And yes, with the females in the support units there were some "rumors" too ... but it seemed no one cared either. And most of the soldiers male or female being young ... they did what comes about naturally at that age ... regardless ...