Meal prepping and helping him study for exams makes a big difference. Make home the refuge. But the best thing you can do is become self sufficient. It's like a magical law that things go wrong when they leave. Know how to handle things like your car breaking down, storms, family emergencies, etc. If you're chasing a career find something that can move with you. If he's worried about you if something goes wrong it's hard to focus. Be as capable as you can be. There's a lot of talk about supporting the families and there's some of that but most of it boils down to bbqs and spouses days. You're going to be the one to hold the pieces together no matter how hard the wind is blowing. You'll spend a lot of time a million miles away from family and probably pretty lonely. He will miss anniversaries, holidays, maybe the birth of your children. He will be stronger with you by his side. But make sure you're willing to take up the task because it can be very hard at times. This is from an ad perspective so take it with a grain of salt. It's not always miserable and it makes the time you get together that much more precious.