Founded in 1853, Fort Riley was established to protect merchants and settlers on the Santa Fe and Oregon-California Trails. Fort Riley kept the peace during the Civil War and in 1893, a cavalry school began operation there. Fort Riley continued to train mounted troops during the Golden Age of Cavalry after World War I, but also served as a training site for more than 150,000 troops during the first and second World Wars. This collection of vintage images commemorating the sesquicentennial of Fort Riley is a colorful, patriotic reminder of the military post that has served the nation continuously since its founding 150 years ago.