Joe Campos was an active member of the Hawthorne Caballeros for 30 years, beginning in 1963. Over those years, he marched in the color guard, and after that served as equipment manager and assistant to the corps director. He was a member of the committee which organized the original Grand Prix contest, and still serves on the committee. He served on the original board of directors of the Great Alliance of Seniors (GAS), representing Hawthorne Caballeros, and has chaired the group organizing the GAS reunions hosted by the Caballeros. He was the original director of the Caballeros Alumni Drum and Bugle Corps, serving in that position for four years. He was appointed vice president of the World Drum Corps Hall of Fame in 2003, following the passing of founding president Vince Bruni.