My relationship has thus far survived, and my carer is male. However, I don't believe that his being male has been a real contributor to the relationship's survival. Yes, he puts up with a fair amount of crap, but has shown no interest in learning more about PTSD, nor in helping me develop coping/recovery strategies and sticking to them. He sort of sweeps it under the rug, really. He IS kind and supportive of me in general, and willing to partially fund therapy (he feels guilty since it was his dog that bit me) and lets me talk if I want to, but I think he doesn't want to understand that sometimes I need *him* to be more of an adult than I am capable of being when I'm triggered. I don't know if that makes any sense.
From what I have seen here and from what I know of the PD/military community, the carers who seem most interested in helping their partner cope/recover and developing strategies for doing so are female.