_The Marine Corps._—The Marine Corps is a distinct military organization normally forming an integral part of the Navy, but when the President so orders any portion of the corps may be detached for service with the Army, and in every war in which the United States has been engaged the marines have fought as a part of the crews of the fighting ships of the Navy, as landing forces and expeditionary forces with the Navy and also on detached service with the Army. The Marine Corps is commanded by a Major General Commandant whose station is at Headquarters of the Corps in Washington, and who is assisted by a staff consisting of an Adjutant and Inspector’s Department, a Quartermaster’s Department and a Paymaster’s Department, each headed by a Brigadier General. The officers of the Adjutant and Inspector’s Department perform the duties that are performed in the Army by the Departments of the Adjutant General and the Inspector General; the Quartermaster’s Department has charge of the supplies, provisions, transportation and the construction and maintenance of barracks and buildings; and the Paymaster’s Department has charge of the accounts and pay of the officers and enlisted men of the Corps. Detachments of the marines are stationed at all of the Navy Yards and Naval Stations of the United States both at home and abroad, and they also serve as Legation Guards for American Legations in countries where such guards are considered necessary, as expeditionary forces with the Fleet and for the protection of Americans and their rights in foreign countries during revolutions and disorders, on detached duty with the Army as circumstances require in time of war, and aboard the battleships and cruisers of the Navy as a part of the crew, their special duties aboard ship being as crews for the Torpedo Defense batteries of guns of intermediate caliber and rapid-fire guns. The Marines of a Fleet are organized into a regiment for duty as a landing force, the detachment from each ship forming one of the companies, and the Colonel commanding the regiment serves on the Staff of the Admiral in command of the Fleet. When assigned to shore duty the Marines are organized into permanent companies, these companies being combined into provisional battalions, regiments and brigades according to the service or duty required. The Marine Detachment or company serving on board a ship of the Navy is paraded as the guard of honor when such a guard is turned out to receive the President, the ruler of any foreign country, or any lesser officer or official entitled to such honors.