The military may have some resources for couples?
I think many military spouses suffer from irritability and stress-related behaviors. (I'm not excusing this, I just think they may have some resources for you both?)
Often times, though not always, loved ones will curb certain behaviors once they have insight into how their behaviors adversely affect someone they care about. It may not do any harm to talk with him more, or do you feel that's too risky?

WC