Its objective was to create Creating a security buffer between Croatia and positions held Hold by the Bosnian Serb Army of Republika Srpska ( VRS ) and to put Placing the largest Bosnian Serb-held city , Banja Luka , in jeopardy by capturing Arrest the towns of Jajce , Šipovo and Drvar .

The secondary objective was threatening the single direct supply route between Drvar in the Bosnian Serb Republika Srpska and Knin , the capital of the Croatian Serb Republic of Serbian Krajina ( RSK ) .

In the spring of 1942 , Yugoslav Partisans in central and west Bosnia liberated Change_of_leadership Bosanski Petrovac , Drvar , Glamoč and Prijedor .

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 .

The airborne assault itself is also known as the Raid on Drvar ( ) .

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 .

Tito , his principal headquarters staff and the Allied military personnel escaped Escaping , despite their presence in Drvar at the time of the airborne assault .

The operation failed due to a number of factors , including fierce Partisan resistance in the town itself and along the approaches to Drvar .