 On the morning of 26 June , the company of the 6th Battalion that had been sent from Mostar continued towards Nevesinje , but almost immediately came under fire from a rebel group . With the assistance of Ustaše , the Home Guard were able to hold their ground , but they were unable to break through to Nevesinje . That afternoon , two aircraft of the Air Force of the Independent State of Croatia ( Croatian : <unk> <unk> <unk> <unk> , ZNDH ) from Sarajevo conducted an armed reconnaissance over eastern Herzegovina , and discovered that NDH forces still held Nevesinje . They observed barricades across the Mostar – Nevesinje road , and <unk> a group of 50 rebels north of Nevesinje near the village of Kifino Selo . Prpić bolstered the force on the Mostar – Nevesinje road with the 17th Battalion , recently arrived from Sarajevo , and sent his deputy , Colonel <unk> Prohaska to command it . The 17th Battalion joined that force at 20 : 00 . About 17 : 00 , the company of the 11th Battalion reached Nevesinje from <unk> , and a further company of the battalion was despatched from Sarajevo , along with the battalion commander . 
