The Eighth (8th) Cavalry Regiment is a regiment of the United States Army established in 1866 during the Indian Wars. The Eighth Cavalry continued to serve under a number of designations, fighting in every other major US conflict since, except World War I, when it was not deployed to Europe because it was already engaged in the Punitive Expedition in Mexico from 1916 to 1920. It is currently a component of the 1st Cavalry Division.