Corpse Gate

The Corpse Gate is a device that appears in The Darkest Shore in Call of Duty: WWII Nazi Zombies. Created by Doctor Straub, the gate would function as a way for Straub to place several "locks" around the island so that he could access without interference. To do this, a headless body and a head are required to open the gate. The body would be chained onto the gate, while the head would be placed on a special device around the corpse's neck. After the corpse and head are revived with the use of two Überschnalle batteries to the side of the gate, the head and body would be brought back to life, only to be brutally pulled apart and killed by the Corpse Gate. The head used in opening the Corpse Gate would be lifted up above the door, so I can be used again for other locks.

As punishment for his actions in Mittelburg, Straub acquired the head of Heinz Richter for his own personal key to the Corpse Gates.