Are you sure you're angry or are you feeling the effects of adrenaline in your system and interpreting it as anger? I know it seems silly to ask that, but I have that problem. When I get really excited or spun up about something, it's sometimes easy to mistake the edginess as anger. Then when the chemicals settle down, I feel zapped, lazy and useless. I noticed this cycle when I was drinking too much coffee too! Great high feeling, anxiety, anger and then major downer.
I do agree that you're going through SO much stress and anticipation. Is it a little scary to wonder what the future holds when H comes home and you settle back in to life together? Are you a "little" miffed about his deployment at all? So many emotions appropriate to what you're going through.