This definitely has some good bones to it, love the aesthetic and i see what you were going for. I found the gameplay to be a bit repetitive (maybe it is a statement about the futility of war, i suppose...), and i think it would be much improved with some automatic movement of enemy troops/limiting your troops so that the stakes feel higher and efficiency of moves/taking cover becomes more important.
pretty unique idea though and definitely keep chipping away at it if it's something you want to keep working on!!