The post was later renamed Fort Crook for 1st Lieutenant George Crook, of the 4th U.S. Infantry, who commanded the Pitt River Expedition of 1857 and in one of the several engagements was severely wounded by an Indian arrow.
[1]: 24–25 During the American Civil War California Volunteers garrisoned the post.
From August 3–12, 1861, troops from this post made a Scout from Fort Crook to Round Valley, in Mendocino County[2] On August 5, 1861, other troops of the garrison fought a Skirmish in the Upper Pit River Valley with the Achomawi.
[4] A restored cabin from the fort site was subsequently located at the Fort Crook Museum in Fall River Mills, California at the east intersection of McArthur Road & Soldier Mountain Road near the marker.
In 2009, a round barn that was used in breaking and training wild horses for the U.S. Army was reconstructed on the grounds of the Fort Crook Museum.