'Sarajevo' was a German and Croat operation against the forces of Marshal Josip Broz Tito in the area to the west of Sesvete and Varazdin in the puppet state of Croatia in German-occupied Yugoslavia (15/18 May 1944).

The object of the undertaking was the destruction of the partisan forces (32^nd and 33^rd Divisions) in the area to the west of the road linking Sesvete and Varazdin between the Ivansčica and Zagrebačka mountain regions.

The Germans provided three battalions of ethnically German Croats of the Polizei-Freiwilligen-Regiment 'Kroatien', and the Croats the 1^st Regiment of Ustase Pukovnik Ante Moskov’s Poglavnik Bodyguard Division and the 2^nd Ustase Battalion of Ustase Pukovnik Rafael Boban’s 5^th Ustase Brigade.

There was intense fighting during the operation, and by 17 May the Axis forces had driven the partisans back into the centre of the Kalnik mountain region around the town of Apatovac. General Dr Julius Ringel’s LXIX Corps claimed partisan losses of 552 counted dead, a further 700 to 800 estimated dead, and 61 captured. A brigade commander of the 32^nd Division was killed and the deputy to the commander of the X Corps was severely wounded. The German and Croat losses amounted to four men killed and 15 wounded. The operation also freed 64 Croat and German military prisoners held by the partisans.