[2] The site was renamed Camp Harry J. Jones in 1916, in honor of a soldier who had been accidentally shot and killed by a stray bullet while on guard duty during the Second Battle of Agua Prieta, which took place between revolutionaries and Mexican government forces across the border from Douglas.

[4] The camp also served as the mobilization site for the Arizona National Guard when it was called up to take part in the Villa Expedition.

[5] During the Villa expedition, units based at Camp Harry J. Jones made extensive use of automobiles and trucks, and also employed aircraft for observation and scouting.

[6] This use of motorized vehicles was the Army's first major effort to employ mechanized forces, and foreshadowed its transition away from horses and mules.

[6] Camp Harry J. Jones remained an important location during World War I, and was the headquarters of the Army's Arizona District.