The orders you can give your soldiers cover just about every conceivable action you might want them to take. Each soldier can run, walk or crawl. They can stand, kneel or be prone. Soldiers can just shoot or aim a shot. They can target special weapons like bazookas.
Soldiers can throw grenades or place satchel charges.
When a soldier's weapon runs out of ammo he must reload it. First aid can be applied to fellow soldiers or a wounded soldier can be carried by a squad mate to safety. Wire can be cut and doors opened or closed. Weapons can be picked up from where they lie and you can even radio in for a quick artillery or mortar strike. Squad leaders or soldiers with high leadership ratings can even try to motivate their fellow squad members into taking extraordinary actions.