This was a German and Croat operation against the partisan forces of Marshal Josip Broz Tito in the Ivanzčica mountain region of the puppet state of Croatia in German-occupied Yugoslavia (23/26 February 1944).
The undertaking’s objective was the destruction of undetermined partisan forces in the Ivanščica mountain region to the south-west of Varaždin. The German contribution to the Axis force is uncertain, while that of the Croats was three undetermined battalions of Ustaže Pukovnik Ante Moškov’s Poglavik Bodygyard Division. The course and results of the operation are no longer known.
An oddity of this operation is the fact that its named German component, the 330th Gebirgsdivision, did not exist. The only German division with this number was the 330th Division, a standard infantry formation which was, in fact, disbanded in the autumn of 1943 after suffering very heavy losses on the Eastern Front. There was no division with this number in existence in February 1944. In any event, there is no after-action report for the operation nor any mention of it in post-war Yugoslav literature.