Good Game. I ended up installing it to try it out on a budget-builded laptop (for a youtube video) and it ended up playing around 30FPS at MAX Performance for an old cpu (A4-6210).
There is a few bugs like it refuses to attack walls on this one level. Sometimes the archers would just not attack troops and both troops would just walk pass each other.
Never the less, this is really good. It reminds me of Hearts of Iron 4 but more simpler. I hope you continue developing on this project and expand it.