The Communist Chinese seldom executed their American prisoners. Instead, they applied a series of mind games and torture to the prisoners in order to "convert" them to Communism. One such trick was to play a soundtrack of such unbridled horror that the most Americans would drop on their knees and gladly abandon all their beliefs just for a chance to stop hearing that soundtrack. That soundtrack is this one.
(Jk.)
I think three battles is entirely reasonable - or maybe I expected it already because there really weren't more than three battles during that time. But I think the same game engine can be used to engineer a greater game. Perhaps something similar to the Total War series - you get to upgrade your troops, maybe even unlock new formations, as you go along.
Archers are a bit overpowered.
It's an okay execution of a good idea.
Except the points don't reset if you press the reset button... which up to a point means the more incompetent the player is, the more points they will get.
Wait, why am I on top of the high score list?