wonderful answer and you already got my money because of your passion and effort. In my family we like a have studied a lot of historical warfare. From uniforms, to weaponry to tactics. The downside? The books are in Spanish. But if you feel the need to contact me so I can show you, maybe, some books that can help you along the way I’ll be honored.
Edit: reading again your post I think that you should check out an old game for phones. It is called “Subterfuge”. It’s about submarines. And by the looks of it, you should play Prey’s (2017) mooncrash. I think that this dlc can’t help you too. No Clip channel on YT has a documentary about this game.