On 19 December, the HV captured the village of Mašićka Šagovina on the southern slopes of Psunj, advancing west towards the Okučani-Lipik road by about . The HV sustained significant losses in fighting to take control of the village from the White Eagles paramilitaries—13 killed and about 20 wounded soldiers. On 22 December, the General Staff of the Armed Forces of the Republic of Croatia requested the Osijek Operational Zone to prepare three brigades for possible deployment as reinforcements in Operation Hurricane-91. The request was prompted by information that the JNA reinforced a day earlier, receiving additional 36 M-84 and 28 T-55 tanks, 20 artillery pieces and 800 troops. On 23 December, the HV made a poorly coordinated attempt to capture the village of Trnava, halfway between Nova Gradiška and Okučani. The attack was not successful, but the defending force withdrew the next day.