CO

CO: The abbreviated term for Commanding Officer, employed colloquially perhaps more often than "OC" (Officer Commanding). An officer of whatever rank, though referred to familiarly as the "CO" would sign officially "OC" whatever his command might be.

References / notes

The above term is listed in our Compendium of the Great War on this day.

Included are trench slang, service terms, expressions in everyday use, nicknames, the titles and origins of British and Commonwealth Regiments, and warfare in general. These words and phrases are contemporary with the war, which is reflected in the language used. Sources include: Soldier and Sailor Words and Phrases, The War Book-of-Facts and Odhams' A.B.C. of the Great War. Feel free to expand upon and improve this content.

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