And besides the difference between offensive and defensive mission objectives, several scenarios - especially in multiplayer - will require the player to split his forces in both defensive and offensive groups. You may not have enough forces to go on the offense across the whole map, so it requires the use of cheaper defensive oriented units (ex. AT guns) to defend certain areas while grouping the main strength in an offensive spearhead to be launched against limited objectives on the map.
The game allows up to 4 players so technically you can have 1 human VS 3 AIs but this is generally not used unless there is a specific reason to split up the AI into several players.Hey, is there a Chance of Multi KI, dear OoBP?