There wasn't that much strategy in this game, our pieces seem to move at random while the enemy (at least that's what it seems to me) has a good AI, whenever i place one of my soldiers in the battlefield they rarely kill an enemy but the opponent's pieces automatically head over to my soldiers which makes this unfair (i'm not sure if that was a feature you inputted or if i've just been having terrible luck), besides that there's also the fact that the opponent's soldier meter goes down much quicker than ours so in the time we get one soldier they're almost getting their second soldier.
It isn't impossible to win, though, i've managed to do it but it is quite random who wins or not.