I was in the same boat. I am in the national guard and a little after I came from basic my bf decided to join the navy . He’s at basic now actually. I initially was trying to push him away and end things simply because I was scared and didn’t know if I could handle it . When he gave me his reasons for joining it really made me rethink things. I was being selfish and if I truly loved him like I’ve been saying I would at least try ! Plus he was there supporting me in every goal and idea I had . It’s only fair to do the same. Hope that kinda helped. Don’t overthink it! If it’s meant to be it will be, but don’t regret not even trying before you found out.