“…As for the Marines, only the slenderest thread of continuity can be claimed by virtue of “marines” serving in the Revenue Cutter Service…There were to be Marine “quotas”…not “detachments” for there was no corps from which they could be detached…
…on 11 July 1798, the true birthday of the Corps,
President John Adams approved…establishing and organizing a Marine Corps.”

-Dick Gaines
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Customs and Traditions
Marine Corps Birthday Celebration

“The U.S. Marine Corps begins preparations for its “birthday party” every summer. Activities become more feverish as the fall hues arrive. By early November, every Marine is either rehearsing his role in the “party” or pressing, polishing, and spit-shining in order to appear at his or her best for the Birthday Ball. This has not always been the case, however. In fact, Marines have not always celebrated their founding on November the 10th.

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.

Until 1921 the birthday of the Corps had been celebrated on another date. An unidentified newspaper clipping from 1918 refers to the celebration of the 120th birthday of the Marine Corps on 11 July “as usual with no fuss.” It is doubtful that there was any real celebration at all. Further inspection of documents and publications prior to 1921 shows no evidence of ceremonies, pageants, or parties. The July date was commemorated between 1798 and 1921 as the birthday of the Corps. During the Revolution, Marines had fought on land and sea, but at the close of the Revolution the Marine Corps and the Navy were all but disbanded. On 11 July 1798, President John Adams approved a bill that recreated the Corps, thereby providing the rationale for this day being commemorated as the birthday of the U.S. Marine Corps.

On 21 October 1921, Major Edwin McClellan, Officer-in-Charge, Historical Section, Headquarters Marine Corps, sent a memorandum to Major General Commandant John A. Lejeune, suggesting that the original birthday on 10 November 1775 be declared a Marine Corps holiday to be celebrated throughout the Corps. McClellan further suggested that a dinner be held in Washington to commemorate the event. Guests would include prominent men from the Marine Corps, Army, and Navy, and descendants of the Revolution.

Accordingly, on 1 November 1921, General Lejeune 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.