[6] In 1917, the fort briefly reopened to train men of the First Battalion Washington Field Artillery in support of action in World War I.

Indian Scouts saved the lives of many of Lt Col Steptoe's personnel during the Battle of Pine Creek.

In May 1858, the Battle of Pine Creek took place, when Lt Col. Steptoe lead troops north to investigate the reported murder of miners and was forced to retreat after being attacked by a mixed force of Spokane, Palouse, and Coeur d'Alene Indians near present Rosalia, Washington.

[13] On June 17, 1877, soldiers of the 1st Cavalry Regiment were involved in the Battle of White Bird Canyon during the Nez Perce War.

[14] Between July 3 and 5, 1877, members of E and L Companies of the 1st Cavalry engaged the Nez Perce Indians at the Battle of Cottonwood with a loss of ten soldiers.

Captain Pinkney Lugenbeel and his soldiers improved the road to support wagons in June 1859 on their way to build U. S. Fort Colville.