Reports have been made on German elite units to infiltrate behind allied lines. Supposedly one of these was part of Fallschirmjaeger Regiment Huebner (FJR 24) in 1944 / 1945. They infiltrated behind commando lines in January 1945 when the Roer Triangle was captured. See also the battle for the Roer Triangle: www.operation-blackcock.com Who has information on these units??