Anyone who needs assistance with any missions up through ACT IV NOD and ACT V GDI feel free to post a question regarding your mission with a little insight as to what is required so i can recall without looking at the game. I completed a lot through HARD difficulty so i can give the strategies for the best of my knowledge.
ah okay. the best thing to do is once you get rid of the turrets, take your predators and destroy the first few tanks and repair them with the rig, then set the rig up right outside their base and have your guys continue to destroy units and not buildings to make them experienced. have apc units destory turrets to level them up but not destroy the turret generator so its unlimited xp until they are star units. after all units are full veterans then go assault across the bridge. destroy everything before you even bring over your engineers.