Werwolf was a Nazi plan which began development in 1944, to create a resistance force which would operate behind enemy lines as the Allies advanced through Germany in parallel with the Wehrmacht fighting in front of the lines. There is some argument that the plan, and subsequent reports of guerrilla activities, were created by Joseph Goebbels through propaganda disseminated in the waning weeks of the war through his "Radio Werwolf", something that was not connected in any way with the military unit.

Führerhauptquartier Werwolf was the codename used for one of Adolf Hitler's World War II Eastern Front military headquarters located in a pine forest about 12 kilometres north of Vinnytsia, in Ukraine, which was used between 1942 and 1943. It was one of a number of Führer Headquarters throughout Europe, and the most easterly ever used by Hitler in person.