Military spouse

This is our first baby, I'm 6weeks today. I'm feeling really bad and just need to vent.
So as you do, I booked my upcoming appointments over the next few weeks( first ultrasound, Drs and obstitrition appointment) and my husband came home from work this week and told me he has to go away. 
So I rescheduled all my appointments because I really want him to be at the first ultrasound( which needs to be done before the others). I feel really sad for him because his going to miss out on so much, and there's nothing I can do 😕😢 I wish he didn't have to go away so much. 
How do you keep them involved? What are some things that can help him feel like his not missing out?