This game could be great for me but..

[ace76543]

My characters move around on their own. My tanks randomly switch from ap shells to he shells to rear machine gun to forward machine gun etc. I tell my men to go one way, they start, then turn around and go in some random direction. Why is this happening? This is a really interesting game but I'm on the verge of uninstalling it and throwing it out because there's no use in having a strategy game where your units mess up your strategy because they feel like taking an afternoon stroll. Seriously, what gives?