Arizona Brigade of Citizens (Cinco De Mayo)

The Arizona Brigade of Citizens, referred to as ABC and whose membership were called the Arizona Hillboys, was a Confederate guerilla organization active in the Territory of Arizona from late 1913 until the withdrawal of American troops in November of 1921, and was instrumental in helping bring about the landslide election of members of the Arizona Statehood Party in the 1922 territorial elections.

ABC became experts in irregular warfare and carried out campaigns of assassinations, sabotage and other insurgent tactics during the American occupation of Arizona beginning in September of 1913. The group's membership excelled in meager living in the Sonoran desert and often retreated back and forth across the Mexican border to elude the US occupation forces. The Hillboys soon were conducting operations not only in Arizona but New Mexico and parts of West Texas, where they were aligned with the West Texas Hillboys. The most notorious action undertaken by the Hillboys was a raid against Cedar City in Utah in 1918, where they massacred 47 townspeople in the Cedar City Massacre and helped turn popular opinion in the American West against the continuance of the occupation. The Hillboys were one of many "Hillboy" organizations in the Confedarcy, and by far the most successful to arise out of an occupied region. ABC in particular was second only to the Ku Klux Klan for its notoriety and capacity for violence.