Yakima War

BelligerentsUnited States
SnoqualmieYakama
Walla Walla
Umatilla
Nisqually
Cayuse
Palouse
Puyallup
Klickitat
SyilxCommanders and leadersIsaac Stevens
Joel Palmer
George Wright
Chief PatkanimChief Kamiakin
Chief Leschi
Chief KanaskatUnits involved4th Infantry Regiment
6th Infantry Regiment
9th Infantry Regiment
3rd Artillery Regiment
Washington militia
Oregon militia
USS Decatur
Snoqualmie warriors Yakama warriors
Walla Walla warriors
Umatilla warriors
Nisqually warriors
Cayuse warriors
Palouse warriors
Puyallup warriors
Klickitat warriors

The Yakima War (1855–1858), also referred to as the Plateau War or Yakima Indian War, was a conflict between the United States and the Yakama, a Sahaptian-speaking people of the Northwest Plateau, then part of Washington Territory, and the tribal allies of each. It primarily took place in the southern interior of present-day Washington. Isolated battles in western Washington and the northern Inland Empire are sometimes separately referred to as the Puget Sound War and the Coeur d'Alene War, respectively.