Operation Resurrection is the seventh and final mission in Return to Castle Wolfenstein. It also refers to a major Nazi operation mentioned in intelligence found throughout the game. B.J. Blazkowicz fights his way through a Nazi dig site and Undead-infested castle ruins in order to reach the site where Heinrich I was imprisoned 1000 years ago. Failing to stop Marianna Blavatsky from performing the dark ritual, Blazkowicz has no choice but to face the evil medieval prince in combat.