Officer of the day

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The officer of the day (OOD) is a detail rotated each day among the unit/post's commissioned officers and/or warrant officers. The OOD oversees security, guard, and law enforcement considerations as well as conducts inspections of dining facilities. Even if the officer has never served as a MP or is not qualified to serve as a provost marshal, all officer basic training courses include the training necessary to perform this duty. Specialist officers such as dentists, physicians, and lawyers have their own Officers of the Day who are responsible for carrying out the various missions of their respective specialties after the duty day is over. The dental officer of the day is called the DOD; the medical officer of the day is called the MOD.

In the Royal Navy, and other navies based upon this structure, the OOD has been delegated authority from the Commanding Officer of a ship or establishment to ensure the routine running of the vessel is carried out. Unlike the USN's OOD, the Officer of the Day is primarily a position used when a warship is alongside in port. Other duties include ceremonial duties (such as carrying out Colours or Sunset) and taking charge in emergency situations in Damage Control Headquarters. Whilst the OOD may be outranked by more senior officers on board, he or she is technically only subordinate to the Captain and the Executive Officer whilst carrying out his or her duties, but a prudent junior officer always seeks advice. Generally on warships, the OOD will be a commissioned junior officer who holds a Harbour Watchkeeping Certificate. On shore establishments, Warrant Officers may be used to augment the duty roster.

General officer of the day[edit]

In the American Civil War, a General officer of the day was a general officer assigned the duties of responding to reports by the picket line, such as a flag of truce.[1]

See also[edit]


  1. ^ June 7, 1864: page 693, The War of the Rebellion (1891) By United States War Dept, George Breckenridge Davis, Leslie J. Perry, Joseph William Kirkley, United States War Records Office, United States Congress. House, Fred Crayton Ainsworth, United States Record and Pension Office.