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Schulze, Hagen (1970), "Der Oststaat-Plan 1919"(PDF), Vierteljahrshefte für Zeitgeschichte (VFZ) (in German), 18 (2): 123–163
wikipedia.org
de.wikipedia.org
The Admiralty was created in March 1919 as the successor to the Imperial Naval Office. Its head, Vice Admiral Maximilian Rogge [de], was acting state secretary for the Navy and, although not a member of the cabinet, had consistently taken part in cabinet meetings.