After the war, he transferred to the postwar Austrian army and served as a commander and general staff officer in various units.

During his service in the Austrian General Staff, he was arrested and dismissed from the army in 1935 for unauthorized contacts with German authorities.

Wiktorin commanded the 20th in the invasion of Poland and attended the German–Soviet military parade in Brest-Litovsk with Heinz Guderian.

In April 1942 before the main German summer offensive that year, he was replaced and transferred to the Führerreserve.

From May 1942 he was head of the military district XIII based in Nuremberg, but was replaced by Karl Weisenberger in November 1944 after the assassination attempt on Hitler in the summer of 1944.