Executive Order 1003

Enlisted men of the Navy and Marine Corps, while being transported on an Army transport, shall be subject to and obey the United States Army Transport Service Regulations, and shall be liable to their proportionate share of police and guard duty whenever the commanding officer of troops on board the transport shall deem it advisable to divide those duties between the enlisted men of the Army and those of the Navy or Marine Corps on board. Enlisted men of the Navy and Marine Corps may also be called upon, but only when, in the judgment of said commanding officer, there is an emergency, to perform such duty as their special knowledge and skill may enable them to perform.

Enlisted men of the Army, while being transported on a naval vessel, shall be subject to and obey the regulations of the ship, and shall be liable to their proportionate share of police and guard duty whenever the commanding officer of the ship shall deem it advisable to divide those duties between the enlisted men of the Navy and those of the Army on board. Enlisted men of the Army may also be called upon, but only when, in the judgment of said commanding officer, there is an emergency, to perform such duties as their special knowledge and skill may enable them to perform.

All orders to enlisted men of the Navy or Marine Corps on board an Army transport, or to enlisted men of the Army on board a naval vessel, shall, as far as practicable, be given through their respective officers, noncommissioned or petty officers.

Theodore Roosevelt.

The White House

January 7, 1909.