candidate: Luftlande - Sturm - Regiment 1 ( also known as " Versuchsabteilung Friedrichshafen " or " Sturmabteilung Koch " ) was a Nazi German " Luftwaffe " " Fallschirmjäger " Regiment which captured the Belgian Fort Eben - Emael during the Battle of Belgium , assaulted Crete , and fought on the Eastern Front during World War II .