697 Unless otherwise specially directed by the President, officers of the Army, when ordered to take passage in vessels-of-war, shall, if of the rank of General Officers, live with the Commander of the squadron, if one is embarked in the same vessel ; otherwise, such General Officers, and all Field Officers by commission, in their respective corps or regiments, shall live in the apartments of the Captain or Commanding Officer of such vessel ; and all other officers of regiments, or corps, with the Lieutenants or Wardroom Officers of the Navy, or with those having the same designation, or who perform similar duties, but without interfering with the sleeping-apartments of the Navy Officers.
698 When officers of the Army are embarked, with troops, in a transport or troop-ship commanded and officered by Navy Officers, the Navy Officers shall occupy the same apartments which they usually occupy when employed on other service, and separate accommodations shall be provided for the special use of the officers of the Army and those under their command.
699 Officers of the Army ordered for passage in ships-of-war may mess separately from the officers of the Navy, in which case a mess-place will be assigned to them ; or, by mutual agreement or order of the Department, may mess with the officers with whom they are authorized to live, they paying their proportion of mess expenses.
700 Officers of the Army embarked with troops in Navy transports, or in troop-ships, shall mess together, and separately from the Officers of the Navy, unless otherwise mutually agreed upon with the sanction of the Commanding Officer of the vessel and of the troops.
701 When any part of the Army, volunteers or militia, of the United States shall be embarked in any vessel of the Navy for duty therein, they shall, until they are regularly detached therefrom, be subject to the laws for the government of the Navy, and to the regulations of police for the vessel, in the same manner and to the same extent as marines when they form a part of the complement of a vessel.
702 Whenever any part of the Army, volunteers or militia, of the United States shall be embarked on board any vessel of the Navy for transportation only, they shall not be subject to the laws and regulations for the government of the Navy, but to the laws for the government of the Army ; but they shall, nevertheless, be subject and conform to the internal regulations of the vessel in which they may be embarked, upon pain of confinement by the Commander of such vessel while on board, and of such punishment as an army court-martial may direct, after they shall have been landed.
703 No army courts-martial shall be held on board any vessel in the Navy when in commission, nor shall army, volunteer, or militia officers order any public punishment or confinement in irons to be inflicted on board such vessel, without the previous approval of the Commanding Officer of such vessel.