The Zeppelin bunker was erected by the Reichspost on the orders of the Oberkommando der Wehrmacht at the end of the 1930s. The bunker was built between 1937 and 1939 in the area of the so-called Stalag as a signal Intelligence centre. The code name for the bunker was Amt 500, i.e., Office 500. The structure consisted of a two-lane longitudinal building with measurements of 117m × 22m with an associated three-storey annex measuring 57m × 40m. After several project changes, a third entrance was added in 1938. Called the Reich Post Building, it could be accessed by light trucks, directly above the extension with a stairwell and an elevator. A south tunnel connected the bunker with Maybach I and II to the southwest.
Maybach I
Maybach I was built starting in 1937. In December 1939, it was fully operational. The complex consisted of twelve three-storey buildings above ground designed to look from the air like local housing, and two floors of interlinked bunkers with two-foot thick walls below. Deeper in the subterranean levels of Maybach I, there were wells for drinking water and plumbing, air-filter systems for protection against gas attacks, and diesel engines to keep the system operational. Later the site was further camouflaged by the use of netting.
Maybach II
Maybach II was completed in 1940 and was of the same design with eleven surface buildings. Incriminating evidence left by the conspirators of the 20 July plot against Hitler was discovered at Maybach II in a safe at Zossen. Among the documents reportedly uncovered were excerpts from the diary of Wilhelm Canaris, conspiratorial correspondence between Abwehr agents, information on the secret negotiations between the Vatican and members of the originally planned coup d’état, and data on the resistance activities of Lutheran minister Dietrich Bonhoeffer.
Between 15 and 17 January 1945, Oberkommando des Heeres moved into Maybach I. The army general staff moved their quarters into Maybach II. During 1945 the site was heavily bombed by both the British and Americans, including a raid on 15 March that injured Chief of the Army General StaffHans Krebs. On 20 April the Soviet 3rd Armoured Guard Army threatened the HQ near Zossen. Gen. Krebs asked Hitler for permission to leave and destroy the important items. By the time Krebs received permission, it was too late to destroy anything. Midday 20 April the OKH evacuated to Eiche near Potsdam and OKW to Krampnitz, and the Russians arrived in the afternoon, finding the site empty apart from four German soldiers.
Cold War era
The two Maybach bunkers were largely destroyed by the Soviet Armed Forces in late 1946, according to the stipulations of the four-power agreement on the occupation of Germany and an Allied Control Council order, although some buildings survived, including the almost entirely intact separate communications bunker Zeppelin. The Zeppelin bunker later formed part of the Soviet Cold war era installations in Wünsdorf under the name Ranet. Further bunker installations were subsequently added to house the central command and communications functions of the Soviet Army in the GDR. The area was demilitarised in 1994 when the last Russian troops left Germany.
The ruins of the above-ground bunker entrance houses remain. The area can be accessed by guided tours, and a museum in the Wünsdorf Book Town houses exhibits on the military history of the town and the bunker complexes. Some parts of the underground complex of Maybach I remain accessible through the ruins of the entrance buildings, together with the neighbouring communications bunker Zeppelin, while Maybach II has been nearly obliterated.
