In October 1864, the 100-day enlistment of the 3rd Colorado Cavalry volunteers was nearing an end, and Chivington's Civil War enlistment had expired, meaning he would soon lose his command position. After learning of the agreement reached with the chiefs, Chivington complained to the head of the Department of Kansas, Samuel R. Curtis, that Major Wynkoop was too conciliatory to the Indians. Curtis replaced Wynkoop with Major Scott Anthony, who agreed with Chivington's goal of Indian eradication. But Major Anthony requested that Wynkoop stay and advise him for a short period, despite being under orders from Curtis to end the protection of the Arapaho and Cheyenne encamped near Fort Lyon, and end the distribution of provisions that had also been promised.