Heeresgruppe Weichsel
On 20 March 1945, Adolf Hitler replaced Heinrich Himmler with Heinrici as Commander-in-Chief of Army Group Vistula on the Eastern Front. Indicating that he was ill, Himmler had abandoned his post on 13 March and retired to a sanatorium at Lychen. At this time, Army Group Vistula's front was less than 50 miles from Berlin.