 On the morning of 25 June , the company of the 6th Battalion at Nevesinje reported that rebels were gathering to attack the town ; Nevesinje 's Ustaše commissioner claimed that the rebel force numbered 5 @,@ 000 , and were led by a former Yugoslav Army colonel . About 10 : 00 , the town was attacked from the south and southwest . In response , the Home Guard despatched two more companies of the 6th Battalion from Mostar to Nevesinje . That morning , reports also arrived from Bileća and Stolac that rebels were approaching the village of Berkovići from the north , and had captured the gendarmerie post at <unk> <unk> . About 11 : 30 , the Ustaše commissioner for Stolac reported that 3 @,@ 000 Montenegrins had gathered between Nevesinje and Stolac , and he requested the immediate supply of 150 rifles for his men . A rebel attack on the gendarmerie post in the village of <unk> near Bileća was repulsed around midday . A platoon of Home Guard reinforcements and weapons for the Ustaše arrived at Stolac in the afternoon , and Bileća was held throughout the day . 
