Thanks for the replies! I think I figured it out. Correct me if I'm wrong, but it looks like the latest version of the mod has it set up so that if you push F1 while looking at the enemy, your troops will advance on them. That isn't what I am used to after playing older versions, but now that I know what it does and how to avoid it when I need to, I think that it is an awesome feature for advancing your troops.
Just one more thing that makes this an awesome mod!