At the end of the brief campaign, the Air Force of the Independent State of Croatia (, ZNDH) made the three or four surviving IK-2s serviceable using other captured aircraft for spares. At the beginning of 1942, there were four IK-2s in service with the ZNDH, but they lacked spare parts. Later that year, an operational IK-2 was observed at Rajlovac airfield near Sarajevo, and in October 1943, two of the IK-2s were operating from Zalužani airfield north of Banja Luka, and remained there for nearly a year conducting strafing missions. At the end of 1943, all four IK-2s were still in service, but at the end of the following year, just two IK-2s remained. No IK-2s survived the war.