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n. Abbr. CO
A military officer in charge of a unit, post, camp, base, or station.
(Military) an officer in command of a military unit
an officer having command of a military unit, installation, etc.
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|Noun||1.||commanding officer - an officer in command of a military unit|
SACLANT, Supreme Allied Commander Atlantic - commanding officer of ACLANT; a general of the United States Army nominated by the President of the United States and approved by the North Atlantic Council
SACEUR, Supreme Allied Commander Europe - commanding officer of ACE; NATO's senior military commander in Europe
armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
commander in chief, generalissimo - the officer who holds the supreme command; "in the U.S. the president is the commander in chief"
military officer, officer - any person in the armed services who holds a position of authority or command; "an officer is responsible for the lives of his men"
wing commander - (RAF rank) one who is next below a group captain