Trawniki men (German: Trawnikimänner) were central and eastern European collaborators recruited from prisoner-of-war camps set up by Nazi Germany for Soviet Red Army soldiers captured in the border regions during Operation Barbarossa launched in June 1941. Thousands of these volunteers served in the General Government territory of occupied Poland until the end of World War II. Trawnikis belonged to a category of Hiwis (German abbreviation for Hilfswilliger, literally "those willing to help"), Nazi auxiliary forces recruited from native subjects.[1][2]