Operation: White Shield v1.2 | Nutz Marine | Joint Ops: Escalation -- SINGLE PLAYER / COOP

Your mission is to protect your section of the "Northern Line." Your frontline fortifications consist of multiple machine gun bunkers, sand bag bunkers, and large fortifications housing heavy guns and machine guns. Behind your frontline fortification is a secondary line with more machine guns and heavy gun bunkers. If you fall back after that, you will be defending your Field HQ consisting of a few machine guns and two fully enclosed bunkers. Hold your lines for 20 minutes and a convoy of choppers will arrive to rescue you, ending the mission. Environment conditions are snowy and medium visibility.

Update:
Battle Ambience (i.e. smoke and fire)
Lowered visibility