Overview
The decision to build the Wolf's Lair was made in the autumn of 1940. Built in the middle of a protecting forest, and located far from major roads, the complex occupied more than 6.5 km2 (2.5 sq mi) and consisted of three separate security zones, the most important of which was Sperrkreis 1 (Security Zone 1), in which was located the Führer Bunker and concrete shelters of members of the inner circle such as Hermann Göring, Martin Bormann, OKW chief Wilhelm Keitel and "chief of operations" OKW Alfred Jodl. There were a total of ten bunkers in this area, all camouflaged and protected by 2 metres (6 ft 7 in) of steel-reinforced concrete. Hitler's was on the northern end, with all its windows facing north to avoid direct sunlight. Both Hitler's and Keitel's bunkers had rooms in which military conferences could be held.
Sperrkreis 2 (Security Zone 2) included military barracks and housing for several important Reich Ministers like Albert Speer, Joachim von Ribbentrop and Fritz Todt as well as Hitler's escort battalion, the Führer Begleit Brigade. Sperrkreis 3 (Security Zone 3) made up the outer security area of the compound, complete with land mines, special security troops and guard houses.
Close by was a facility for the Wehrmacht Operations Staff, and army headquarters was located several kilometres to the northeast of the FHQ complex. All these installations were served by a nearby airfield and train lines.
About two thousand people lived and worked at the Wolf's Lair at its peak, among them twenty women.
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