Wiktorin served as an officer in the Austro-Hungarian army in the First World War. 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.[1]
On 28 November 1940 Wiktorin took over as Commanding General of the XXVIII. Army Corps. He commanded the Corps in Operation Barbarossa, the invasion of the Soviet Union. As part of Army Group North Wiktorin's corps advanced through the Baltic states and was part of the forces that besieged Leningrad. 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.[1]
Scherzer, Veit (2007). Die Ritterkreuzträger 1939–1945 Die Inhaber des Ritterkreuzes des Eisernen Kreuzes 1939 von Heer, Luftwaffe, Kriegsmarine, Waffen-SS, Volkssturm sowie mit Deutschland verbündeter Streitkräfte nach den Unterlagen des Bundesarchives [The Knight's Cross Bearers 1939–1945 The Holders of the Knight's Cross of the Iron Cross 1939 by Army, Air Force, Navy, Waffen-SS, Volkssturm and Allied Forces with Germany According to the Documents of the Federal Archives] (in German). Jena, Germany: Scherzers Militaer-Verlag. ISBN978-3-938845-17-2.