Quote Originally Posted by pezhetairoi
Then I advance my rams, stopping in front of the wall without ramming. Some units would begin running forward again to anticipate the ramming.
That has nothing to do with the ram. They always come back after some time (and a lot of running around the town square). But they immediatly turn back when comming under fire. When you have breached the wall, usually one enemy unit is sent to the gate without running back under fire. Be sure to have javelin units behind the wall and you'll get this unit "for free".