Johannes "Hans" Friedrich Leopold von Seeckt (22 April 1866 – 27 December 1936) was a German military officer who served as Chief of Staff to August von Mackensen and was a central figure in planning the victories Mackensen achieved for Germany in the east during the First World War. A large military barracks in Celle was built in 1935 and named after von Seeckt. After the Second World War it was renamed Trenchard Barracks by BAOR as part of the Bergen-Hohne Garrison.