Well let's see, on one hand we have people saying "homosexuals shouldn't fight for a country in which they don't have equal rights". On the other we have people saying "sexual orientation is irrelevant, we should be allowed. (Aside from the homophobes out there.)
I say, that both sides have a good reason to think that way HOWEVER whether you want to fight for a country that doesn't give you equal rights or not, you should be able to make that choice YOURSELF.
So...yes I believe homosexuals should be allowed in the army.