As many others have already commented, this is an incredible project for a game jam and I thoroughly enjoyed it. I love the presentation and its adorable quality, the latter which I don't see too often with many sci-fi war settings. This game has a lot of promising potential and I hope the team will be able to continue its development.
My only main critique is that it would be nice if you could move more than one unit on a turn, though that would work better with larger maps. Whatever direction you take with this, I had fun with this.