Objective 1 : Link up with Sgt Heath.

As soon as you parachute into the level and land on the ground, run up to the wall that is north of your position. You will find it at the top of a small slope.

When you reach the wall, look to the west and spot the German guard taking a piss by the tree.

Use your Iron Sights (a targeting reticle that appears when aiming down the sights of your weapon) to get in a clean headshot (a shot that hits the enemy's head, usually resulting in an instant kill) on him.

Proceed to the objective marker on your compass (a navigational tool that shows directions and nearby objectives).

As you approach it, you will see that Sgt Heath landed himself in a tree and is now dead.