The Battle of Isis Pass took place a few days after the Battle of Port Royale and was the second and last battle in the Umanian War for Independence. While OOM-10 destroyed the entire Umanian army at Port Royale he didn't expect the rebels to have another army of that size. OOM-10 was planning on destroying the city of Uman Rai when he moved through Isis Pass. He was halfway through the pass when he was ambushed by a mixed army of Umanian warriors and battle droids. The battle was a victory for the Umanians and it won the Umanians their independence.