The Battle of Chustenahlah was fought in Osage County, Oklahoma, (then Indian Territory) . A band of 9,000 pro-Union Indians was forced to flee to Kansas in bitter cold and snow in what became known as the Trail of Blood on Ice.
Confederate troops undertook a campaign to subdue the Native American Union sympathizers in Indian Territory and consolidate control. They attacked Chief Opothleyahola's band of Creeks and Seminoles (led by Chief Halek Tustenuggee) earlier at Round Mountain and Chusto-Talasah. Now, they wanted to finish them off by assaulting them in their camp at Chustenahlah (corruption of the Cherokee word "U-s-ta-la-na", meaning a shoal or sandbar in a stream or creek) in a well-protected cove on Bird Creek. Colonel James M. McIntosh and Col. Douglas H. Cooper, commanding the Indian Department, planned a combined attack with each of their columns moving on the camp from different directions. McIntosh left Fort Gibson on December 22, with 1,380 men.
On December 25, he was informed that Cooper’s force could not join him for a while, but he decided to attack the next day, despite being outnumbered and facing severe cold weather conditions. McIntosh assaulted the camp at noon. The 1,700 pro-Union defenders were secluded in the underbrush along the slope of a rugged hill. McIntosh devised a plan to converge on the crest, with the South Kansas-Texas Cavalry (also known as the 3rd Texas) ordered to charge directly up the steep bluff on foot. The 11th Texas advanced to their left using a defile for concealment, while the 6th Texas circled to the right. As the Confederate attack progressed, the Indians began to fall back, taking cover for a while and then moving back. The retreat became a rout as the Federals reached their camp. The Indians attempted to make a stand there but were forced away again by 4:00 p.m. The survivors fled; many went all the way to Kansas where they found loyal Unionists. Three hundred Cherokees under Col. Stand Watie intercepted the fleeing Creeks and Seminoles, killing 15 of them. Chief Opothleyahola’s band mounted no further resistance, and nearly 2,000 of them died on or shortly after the trek to Fort Row, Kansas, mostly due to exposure and disease.
The only mention of the engagement is made in Confederate reports, which state that upwards of 250 of the Union force engaged were killed. The Confederate loss was 9 killed and 40 wounded.
The victorious Confederates captured 160 women and children, 20 blacks, 30 wagons, 70 yoke of oxen, about 500 Indian horses, several hundred head of cattle, 100 sheep, and large quantities of supplies.
Order of battle
McIntosh's Brigade (Confederate) – Col. James McQueen McIntosh
6th Texas Cavalry Regiment - Lt. Col. John S. Griffith
7 Companies, 11th Texas Cavalry - Col. W. C. Young
4 Companies, 2nd Arkansas Mounted Rifles - Capt. William Gipson
Bennett’s Texas Company - Captain Bennett
http://digital.library.okstate.edu/encyclopedia/entries/C/CH065.html - Encyclopedia of Oklahoma History and Culture