Nazi trucks from CoD 2 on "Endgame"
Play Campaign mode and select "Endgame" in Act 3. After exiting the caves during the speedboat chase, look at the village on the hills to the left coast. You'll notice a Nazi truck from Call Of Duty 2 behind a low wall near a pontoon and another one farther down at a jetty. Note: You will lose Shepherd by stopping to find the trucks.