Ben Locke (center), led this group, most of them Choctaws, on the Mexican border in 1916. They were the Oklahoma state guardsmen who later became Code Talkers during WWI. When the U. S. nationalized the state guard in 1917, Locke led his old group through mustering in at Fort Sill, and they were sent to Fort Bowie at Fort Worth for training. There, his troops were integrated into the 142nd and he was reassigned to an artillery unit and trained troops at Fort Stanley in Texas. The men in the photo are from a number of tribes in Oklahoma. The photo was taken at Fort Stanley near San Antonio. Courtesy of the Sequoyah Research Center at UALR.