The Netherlands: Military Occupation: 1940-1945 Reichskommissar für die besetzten niederländischen Gebiete [1] 29 May 1940 - 5 May 1945 Arthur Seyss-Inquart [2] [1] Also in official use (Dutch): Rijkscommissaris voor het bezette Nederlandsche gebied. [2] Appointed on 18 May 1940; arrived to The Hague on 25 May 1940 and was formally installed on 29 May 1940. Last updated on: 10 Jan 2022 21:53:20