According to the Associated Press, Karkoc was a founding member and a lieutenant in the 2nd Company of the Ukrainian Self Defense Legion. The USDL was one of the battalions of the
Schutzmannschaft organized and sponsored by the Nazi German
Schutzstaffel, led by
the Nazi German SS-Police, and the Nazi German Sicherheitsdienst (SD)
SS Intelligence Agency. Following the disbandment of the USDL, he was transferred to the
14th Waffen Grenadier Division of the SS (1st Ukrainian) "Galizien" ("14th Waffen-SS Division"), where he was an officer and served as a deputy company commander. The USDL allegedly took part in war crimes against civilians in
Ukraine and
Poland. Some news reports, referencing the AP investigation, state that Karkoc served in the 14th Waffen-SS Division and that it helped to suppress the Warsaw Uprising; however the Division did not participate in the fighting of the Warsaw Uprising, nor was it even in Poland at the time. The USDL was disbanded in November 1944 and the few surviving units were mostly assigned to the
30th Grenadier Division of the Waffen-SS. In the first months of 1945, some of the remaining elements of the USDL, formally known as the 31 SD Schutzmannschafts Battalion, were transferred to the 14th Waffen-SS Division, which was engaged in anti-partisan actions on the Slovenian-Austrian border. Thus if Karkoc had been a member of the 14th Waffen-SS Division, it would have been for a few months before it surrendered to Western Allies by May 10, 1945. According to the AP, a Nazi German payroll sheet found in Polish archives signed by an SS officer on January 8, 1945 suggests that Karkoc was present in
Kraków,
Poland to collect his salary as a member of the USDL. ==Allegations about identity==