01/29/1863
Union Volunteer troops attack and kill hundreds of Shoshone at Bear River, in present-day Idaho
06/08/1863
Young volunteer officer killed in clash with Sioux Indian raiders in central Minnesota
06/10/1863
Warriors of the Southern Ute tribe ambush mail coach in Utah, kill two
06/16/1863
In Minnesota, General H.H. Sibley and more than three thousand troops march against the Santee Sioux
07/20/1863
In Minnesota, General H.H. Sibley and his men finally closes the pursuit of the Santee Sioux
07/24/1863
In Dakota Territory, General H.H. Sibley and his men finally meet the Santee Sioux in the Battle of Big Mound
07/26/1863
In Dakota Territory, near Dead Buffalo Lake, Lakota Sioux strike at the pursuing U.S. Army but are driven off
07/28/1863
In Dakota Territory, at Stony Lake, Lakota and Santee Sioux fight covering action to protect retreat of their families
07/29/1863
Near present-day Bismarck, North Dakota, Sioux Indians intercept and kill General Sibley's aide as he delivers messages
07/31/1863
In Dakota Territory, General Sibley declines to cross the Missouri and ends his campaign to punish the Sioux
08/08/1864
At Plum Creek in Nebraska, Cheyenne Indians attack and wipe out a sizable wagon train carrying freight, killing eleven
11/29/1864
At Sand Creek in Colorado, territorial volunteers attack encamped Cheyenne and Arapaho, killing hundreds
07/25/1865
- 07/26/1865
In Wyoming, a thousand Cheyenne warriors attack the immigrant transport link at Platte Bridge
08/29/1865
In Wyoming, U.S. troops scatter a large Arapaho village on the Tongue River
02/22/1866
In western Oregon, U.S. infantry storm a Shoshone village near present day Jordan Creek
06/17/1866
The United States Army begins its incursion into Native-American territory along the Bozeman Trail.
09/21/1866
In Kansas, a new U.S. cavalry regiment, the Seventh, begins its formation at Fort Riley.
12/21/1866
Sioux and Cheyenne warriors wipe out 81 U.S. Army soldiers near Fort Phil Kearny in Wyoming.
02/23/1867
At the White House, President Johnson meets with a delegation representing Sioux tribes.
04/07/1867
General W.S. Hancock arrives in force at Fort Larned to negotiate with Kansas native American tribes.
04/12/1867
General W.S. Hancock negotiates with Cheyenne and Sioux leaders near Fort Larned, Kansas
04/19/1867
General W.S. Hancock burns the large abandoned Cheyenne and Sioux village near Fort Larned, Kansas
04/23/1867
General Hancock meets with Kiowa tribal leaders near Fort Dodge, Kansas.
06/08/1867
On campaign in western Kansas, the Seventh Cavalry's second in command commits suicide.
06/16/1867
Hostile Cheyenne attack settlers in Kansas, killing one.
06/16/1867
Hostile Kiowa warriors attack a wagon train at Cimarron Crossing, Kansas, killing three.
06/24/1867
George Armstrong Custer has his first encounter with Plains Indians in eastern Nebraska.
06/26/1867
The Seventh Cavalry fight a heavy skirmish near Fort Wallace, Kansas with Cheyenne and Sioux warriors.
06/27/1867
Sioux and Cheyenne warriors attack a railroad camp in western Kansas, killing one.
06/29/1867
In Kansas, Cheyenne and Lakota warriors wipe out a U.S. Army detail of twelve men.
07/07/1867
On campaign in western Kansas, Custer's Seventh Cavalry suffers a rash of desertions.
07/12/1867
In Kansas, Seventh Cavalry scouts find the bodies of Lieutenant Kidder's patrol killed two weeks before.
07/20/1867
The U.S. Congress authorizes an Indian Peace Commission to negotiate with hostile Plains Indian tribes.
08/06/1867
The Indian Peace Commission, newly appointed to negotiate with hostile Plains Indian tribes, organizes in St. Louis, Missouri.
08/19/1867
The Indian Peace Commission meets with Sioux tribal leaders near Fort Thompson in South Dakota.
10/21/1867
In Kansas, negotiations at Medicine Lodge River result in two peace treaties Plains tribes.
10/28/1867
At Medicine Lodge River in Kansas, a third peace treaty is signed, this with the Cheyenne and Arapaho.
11/25/1867
At Fort Leavenworth, Kansas, George Custer is suspended from the Army for absence without leave.
