Frederick had wished to be buried next to his greyhounds on the vineyard terrace on the side of the corps de logis of Sanssouci. His nephew and successor Frederick William II instead ordered the body be entombed next to his father in the church of the Potsdam garrison. Near the end of World War II, Adolf Hitler ordered the coffins of Frederick and Frederick William I, as well as those of Paul von Hindenburg and his wife, transferred first to an underground bunker near Berlin, then hidden in a salt mine close to the town of Bernrode, Germany, to protect them from destruction. The US Army discovered the four coffins on 27 April 1945, behind a 6-foot-thick (1.8 m) masonry wall deep within the mine, and moved them to the basement of Marburg Castle, a collection point for recovered Nazi "treasure". As part of a secret project dubbed "Operation Bodysnatch", the US Army relocated both kings first to the Elisabeth Church of Marburg and then on to Burg Hohenzollern close to the town of Hechingen. After German reunification, the body of Frederick William was entombed in the Kaiser Friedrich Mausoleum in Sanssouci's Church of Peace.