Since he generally carries the med packs and he's of tactical importance, you want to keep him alive to support the other players. In dangerous situations always move your force commander in last (he has a natural tendency to rush in first). If you send everyone in at once without establishing a clear frontline and pressing forward, it's very easy to get surrounded and overwhelmed. The basic leapfrog attack formation works for a few reasons. Attack formations vary depending on the enemy, but you usually want to have your heavy gunners attack first, from a distance, forming your front line, then move in your melee-oriented guys (usually Thaddeus and Force Commander), well supported. Many ranged attacks will give you a few seconds warning to get out of the way, so being able to quickly select the unit you need with the number keys and move him helps a great deal. Unlike most RTS games, there's a constant need to independently move each squad. The first important thing to lean is how to juggle your squads. In many ways, this is very basic and action-oriented. This means all of the strategy is focused on how you approach and attack. In the campaign mode, you'll be limited to four squads on all but a few occasions. This isn't your basic real-time strategy game.