Senior officer

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A senior officer is an officer of a more senior grade in military or other uniformed services. In military organisations, the term may refer to any officer above

Sometimes, particularly in the army, this grade is referred to as field-grade officers, field officers or officers of field rank. Historically, a regiment or battalion's field officers made up its command element.

Canada

In the

are traditionally known as Stabsoffiziere (English: staff officers).

Russia

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Shtabofitser (

Russian Imperial Army

and Navy until 1917.

Rank group	Field officers (Russian: Штаб-офицеры, romanized: Shtabofitsery)
Nevsky 1st Infantry Regiment
Ivanogorodsky 99th IR
	Полковник Polkovnik	Подполко́вник Podpolkovnik	Майо́р Major	Капитан Kapitan	Штабс-капитан Stabs-kapitan

United Kingdom and Commonwealth

The British Army and Royal Marines use the terms "officers of field rank" or "field officers" to refer to the ranks of major, lieutenant colonel, colonel and brigadier. The term "senior officer" is used for the ranks of lieutenant commander, commander, captain and commodore in the Royal Navy, and squadron leader, wing commander and group captain in the Royal Air Force. An RAF air commodore, however, is considered to be an air officer.

A number of other armed forces in the Commonwealth, including Australia and New Zealand, also follow this pattern.

United States

The officer group in United States Armed Forces, has two different names depending on the branch. In the Army, Marine Corps, Air Force, and Space Force the rank group is called field grade and consists of major, lieutenant colonel, and colonel. United States Army Commissioned Chief Warrant Officers in the grades of CW3-CW5 are also grouped with and wear the uniform of field-grade officers. In the navy, and coast guard, the rank group is called mid-grade and consists of commander, and captain.^[4]

References