Formal commemoration of the birthday of the Marine Corps began on 10 November 1921. That particular date was chosen because on that day the Second Continental Congress resolved in 1775 to raise two battalions of Continental Marines.
On 1 November 1921, General Lejeune, 13th Commandant of the Marine Corps, issued Marine Corps Order No. 47, Series 1921. The order summarized the history, mission, and tradition of the Corps, and directed that it be read to every command on 10 November each subsequent year in honor of the birthday of the Marine Corps. This order has been duly carried out.