If you mod that line to TRUE, is it guaranteed that you will *always* get reinforcements, or is there still a certain randomness that sometimes you will, sometimes you won't?

The issue for me is that I like it to be a little random either way - I don't want to know for sure whether my reinforcements will arrive or not. The way it is now, it seems a bit silly that my reinforcements will ONLY arrive when the number of men on the battlefield allows it. But if this changes it so they'll definitely arrive 100% of the time, I'd rather not make the change...