List of United States Marine Corps Acronyms and Expressions - U

U

• UA – Unauthorized Absence, the naval version of the term AWOL.

• UCMJ – Uniform Code of Military Justice (Public Law 506, 81st Congress) 1951, the system of military law, both judicial and non-judicial.

• UD – Unit Diary, the computerized system that maintains all administrative records for a unit.

• un-ass or un-fuck – to correct a deficiency, usually on a person.

• under arms – status of having a weapon, sidearm, "MP" or "SP" brassard, or wearing equipment pertaining to an arm such as a sword sling, pistol belt, or cartridge belt as part of guard duty; Marines under arms do not remove covers indoors.

• under canvas – living under temporary sheltering, such as a tent.

• under way – to depart or to start a process for an objective.

• unq – unqualified, usually in reference to training events.

• unsat – abbreviation of unsatisfactory.

• USMC – Acronym for United States Marine Corps. Also used as a pejorative backronym: Uncle Sam's Misguided Children, U Signed the Motherfucking Contract, U Suckers Missed Christmas, Unlimited Shit and Mass Confusion, University of Science, Music and Culture, Uncomplicated Shit Made Complicated, Under Seabee Management Constantly.

• utilities – field and work uniforms (currently the MCCUU), formerly called dungarees, inappropriately called the Army term BDU.