Operation Rösselsprung ( Knight 's move ) was a combined Cause_to_amalgamate airborne and ground assault Attack by the German XV Mountain Corps and their allies on the Supreme Headquarters of the Yugoslav Partisans located in the Bosnian town of Drvar in the Independent State of Croatia during World War II .

Operation Rösselsprung was a coup de main operation Military_operation , involving Participation direct action by a combined Cause_to_amalgamate parachute and glider-borne assault by the 500th SS Parachute Battalion and a planned subsequent link-up with ground forces of the XV Mountain Corps converging Come_together on Drvar .