Objective 1 : Secure all enemy maps and documents.

First things first, listen to your Sergeant. He'll lead you to a spot where the enemy opens fire. Don't just charge in! Take a sec to spot their positions, then lob a couple of grenades their way. After the explosions, run in and finish off anyone who's still standing.

Next, you'll push through the trenches. When you hit the first 90-degree bend, get ready. Lean out carefully – there are three Germans who will pop up right there. Take them out, and keep moving.

This next part is crucial: you HAVE to stay low. Seriously, there are two MG42 gunners who will shred you if they get a clear line of sight for more than three seconds. Your goal is to get to a point where you can just barely see the next Artillery Gun and the guys around it. Lob two grenades into that area to clear them out, then rush in to mop up any survivors. Wait for Sgt. Moody to plant the explosives on the gun.

With the artillery gun dealt with, you'll move further into the trenches. Before you get to a door, there's a German soldier standing guard. Take him out, then enter the room. Inside, you'll find about five enemies. Three are hiding among the boxes in the first room, and the last two are in the next room over. Clear them all out.

Once all the enemies in those two rooms are down, you'll find the first set of documents. They're on a table right next to a radio. Grab 'em!

After securing the documents, head out the door and follow your squad. You'll reach an area where allied soldiers are fighting off a large German group. The Sergeant will be talking to the Medic. Keep an eye out for more Germans approaching while this is happening. Eventually, the Medic gets shot, and the Sergeant has to go out and help the wounded soldier in the field.