III./ZG 26 carried out strafing attack on Podgorica airfield, destroying two bombers and damaging three belonging to the 81 Independent Grupa at Mostar-Ortijes. The 66 "Grupa" led by 4 "Bombarderska", Colonel Petar Vukcevic, Royal Yugoslav Air Force and 7th Puk bombers were also operating from airfields in the vicinity. Fliegerkorps VIII claimed 60 aircraft on 6 April. II./ZG 26 reported one loss over Skopje. I./ZG 26 supported Operation Retribution, the bombing of Belgrade, and claimed two Yugoslav-flown Bf 109s. In combat with the 6th Puk fighter unit, the group lost five Bf 110s; Yugoslav also accounted for two Do 17s from 8./KG 3.