Mustache March is an annual event occurring in the month of March, where men in the United States Air Force grow mustaches to honor Air Force legend Robin Olds. The idea stems from an early Air Force tradition in which members of the U.S. Air Force would grow mustaches in good-natured protest against facial hair regulations during the month of March. The act of growing a mustache as a gesture of defiance against dogmatic leadership is attributed to U.S. Air Force triple-ace Robin Olds who grew an extravagantly waxed handlebar mustache which did not comply with U.S. Air Force regulations.