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.
Pre-battle[]
Fighting these foolish rebels is a waste of my skills
—OOM-10 right before the Battle of Isis Pass
OOM-10 had just won a crushing victory at Port Royale, completely destroying the rebel army there along with their general, Deringi Saigos, so he was more than a little arrogant as he moved on Uman Rai. The Umanian general, Iscarrd Veston, however learned from his past mistakes and decided that a frontal assault on OOM-10's army would be suicide. Then he remembered the battle droids they had captured and formulated a plan. He would use the droids to form a battle line in Isis Pass to draw the AAT's to attack them. Meanwhile his main forces would ambush the MTT's and destroy them before they could unload their droids. His army hid in the jungle as they heard OOM-10's army approaching.
The battle[]
I want those MTT's destroyed as soon as possible, don't let them unload the droids.
—Iscarrd Veston
OOM-10 looked through his macrobinoculars and saw a line of battle droids forming at the other side of the valley. He feared he would have to destroy the droids defying direct orders from the Viceroy. He decided he would send in his AAT's and STAP's to destroy the droids, just as General Veston had planned. When the tanks were out of range the Umanian light tanks emerge from their hiding places and began to destroy the MTT's. OOM-10 received a distress signal from the MTT's and he turned his tanks around and headed back as fast as he could. By the time OOM-10 and his tanks made it back the MTT's and all of his infantry were destroyed. Then the next phase of the battle began as the AAT's and STAP's fought all the Umanian forces. At one point an Umanian threw a thermal detonator into OOM-10's tank and it exploded, killing OOM-10 and the rest of the crew. The battle raged into the night until every last droid was destroyed.
Aftermath[]
After the battle was won the Trade Federation deemed it to costly to send another army and they had also been dealt a stinging blow by having one of their best commanders killed in battle. The Umanians had won their independence because of a war that lasted a few days. Umanians celebrated for days after the battle as they ushered in a new Republic.