[1][2] After recovering, Wicker completed courses for SS leadership applicants at the SS-Junker Schools in Bad Tölz from August to November 1943.

In November 1943, Wicker, now a Oberscharführer, was transferred to Amtsgruppe D of the SS Main Economic and Administrative Office.

One of his first official acts there was the execution of the Warsaw prisoner Marian Krainski on 3 January 1945, for alleged factory sabotage in the schoolyard of the Friedrich School, to which he had invited five representatives of Daimler Benz.

On 29 April 1945, Wicker surrendered the camp to General Henning Linden of the 42nd Infantry Division (United States) of the 7th US Army.

[1][2][3] Weicker was never seen alive again after the war, and it is generally assumed that he was summarily executed by American soldiers during the Dachau liberation reprisals.