Yeah I was a big fan of CoH well apart from spending 2 days updating it anywho
I'm still a noob myself, but what I tend to do is call in an infantry squad to a safe point and then select them in ones and twos to position them.
I'm still working on bringing up my level of aggression, but when trying to capture a defended flag I try to send troops in different directions with mortar support. Not that it always works, but I really don't like sending my men to their deaths by rushing head long into the flag zone.