Frederick Steele’s Federal Army of Arkansas enters the state capital after two top Confederate commanders fight a duel and Sterling Price’s Confederate army withdraws.
Federal forces confront the Confederates at Elk Creek near Honey Springs in what becomes the largest battle ever fought in the Indian Territory.
The National Council of Cherokee Indians approves resolutions repealing its ordinance of secession, renouncing its support for the Confederacy, declaring new support for the U.S., and abolishing slavery in the Cherokee Nation.
Following the Battle of Prairie Grove, Federals led by James G. Blunt begin a hard march through the Boston Mountains in an effort to conquer northwestern Arkansas.
Thomas C. Hindman’s Confederates attack Francis J. Herron’s Federals about 12 miles southwest of Fayetteville, Arkansas, sparking a confusing but brutal 12-hour battle.
James G. Blunt’s Federals are isolated in northwestern Arkansas, and the race is on to see whether reinforcements or Confederates can reach him first.