It's not really like KUF at all.
Basically you get a squad of 4 or 5 guys that follow you around, and can take orders. Each type of character can issue different orders, and have different abilities(machine gun, sniper, bazooka).
You run around blowing things up and killing people accumulating points, with these points have the ability to call in all kinds of equipment just like mercenaries, machine guns, anti tank guns, trucks, halftracks, airstrikes, artillery strinkes, reinforcements, etc etc
In the MP game in the Demo,there are strategic locations to try and capture and hold, and they give you extra abilities. If you capture one of the radio towers for example, you can call in air strikes and use wiretaps on the opposing team. If you capture the armory, you can produce top end machine and anti-tank weapons, if you capture the tank building you can create tanks. Additionally, you can always order in reinforcements if your squad is depleted.
The teams fight back and forth over these locations until one team has captured all spawn points, or the first team to have it's points reach zero loses, you gain/lose points depending on how many strategic locations you hold.
It's fun, I like setting up a 70mm anti-tank gun and just blasting the enemy base until their entire wall crumbles away, with the bigger guns you can literally destroy anything on the map which is good fun.