Lieutenant colonel (United States)

In the United States Army, U.S. Marine Corps, and U.S. Air Force, a lieutenant colonel is a field-grade military officer rank just above the rank of major and just below the rank of colonel. It is equivalent to the naval rank of commander in the other uniformed services.

The pay grade for the rank of lieutenant colonel is O-5. In the United States armed forces, the insignia for the rank consists of a silver oak leaf, with slight stylized differences between the Army/Air Force version and the Navy/Marine Corps version.

Promotion to lieutenant colonel is governed by Department of Defense policies derived from the Defense Officer Personnel Management Act (DOPMA) of 1980 for officers in the Active Component and its companion Reserve Officer Personnel Management Act (ROPMA) for officers in the Reserve Component (e.g., Reserve and National Guard). DOPMA guidelines suggest 70% of majors should be promoted to lieutenant colonel after serving a minimum of three years at their present rank and after attaining 15–17 years of cumulative commissioned service.

Lieutenant colonel
US-O5 insignia
Army, Marine Corps, and Air Force garrison insignia of the rank of lieutenant colonel. Style and method of wear may vary between the services.
Country United States
Service branch
AbbreviationUS Army: LTC
USAF: Lt Col
RankLieutenant colonel
NATO rankOF-4
Non-NATO rankO-5
Next higher rankColonel
Next lower rankMajor
Equivalent ranks
U.S. Army insignia of the rank of lieutenant colonel for the dress blue uniform. Style and method of wear may vary between the services.
US Marine O5 shoulderboard
U.S. Marine Corps insignia of the rank of lieutenant colonel as shown on the coat of winter uniform Alpha. Style and method of wear may vary between the services.
US Air Force O5 shoulderboard
U.S. Air Force insignia of the rank of lieutenant colonel as shown on the coat of the dress blue uniform. Style and method of wear may vary between the services.


While sometimes written as "Lt. Colonel" in orders and signature blocks, as a courtesy, lieutenant colonels are addressed simply as "colonel" verbally and in the salutation of correspondence. The U.S. Army uses the three letter abbreviation "LTC," while the United States Marine Corps and U.S. Air Force use the abbreviations of "LtCol" and "Lt  Col" (note the space), respectively. These abbreviation formats are also outlined in The Naval Institute Guide to Naval Writing[1] and in Air Force Handbook 33-337 (AFH 33-337), The Tongue and Quill.[2]

The U.S. Government Printing Office recommends the abbreviation "LTC" for U.S. Army usage, "LtCol" for Marine Corps usage, and "Lt. Col." for the Air Force.[3] The Associated Press Stylebook recommends the abbreviation "Lt. Col." for the Army, Marine Corps, and Air Force.[4]

Slang terms for the rank historically used by the U.S. military include "light colonel", "short colonel", "light bird", "half colonel", "bottlecap colonel" (referring to the silver oak leaf insignia), and "telephone colonel" (from self-reference as "colonel" when using a telephone).


Confederate States of America Lieutenant Colonel
Lieutenant colonel rank insignia of the Confederate army, used during the American Civil War.

The rank of lieutenant colonel has existed in the British Army since at least the 16th century and was used in both American colonial militia and colonial regular regiments.[5] The Continental Army continued the British and colonial use of the rank of lieutenant colonel,[6] as the second-in-command to a colonel commanding a regiment.[7] The lieutenant colonel was sometimes known as "lieutenant to the colonel."

In British practice, regiments were actually commanded by their lieutenant colonels, as the colonel was a titular position [8] (with the incumbent absent from the regiment serving as a senior staff officer, a general officer, or as a member of the nobility). Since the British colonel was not a "combat" officer, beginning in May 1778 to simplify prisoner of war exchanges, American regiments began to eliminate colonels by attrition and replace them with a lieutenant colonel commandant. The conversion was never completely effected and some regiments remained commanded by colonels throughout the war.[9] From 1784 until 1791, there was only one lieutenant colonel in the US Army (Josiah Harmar), who acted as the army's commanding officer.

In the Continental Army aides to the Commander in Chief, viz., Lieutenant General George Washington, were lieutenant colonels. Additionally, certain officers serving under the Adjutant General, Inspector General, and Judge Advocate General, ranked as lieutenant colonels.[10]

During the 19th century, lieutenant colonel was often a terminal rank for many officers, since the rank of "full colonel" was considered extremely prestigious reserved only for the most successful officers. Upon the outbreak of the Civil War, the rank of lieutenant colonel became much more common and was used as a "stepping stone" for officers who commanded small regiments or battalions and were expected, by default, to be promoted to full colonel once the manpower of a regiment grew in strength. Such was the case of Joshua Lawrence Chamberlain, who commanded a Maine regiment as both a lieutenant colonel and later as a colonel.

After the Civil War ended, those officers remaining in the United States Armed Forces found lieutenant colonel to again be a terminal rank, although many lieutenant colonels were raised to higher positions in a brevet status. Such was the case with George A. Custer, who was a lieutenant colonel in the regular army, but held the brevet rank of major general.[11][12]

The 20th century saw lieutenant colonel in its present-day status although, during the 1930s, many officers again found the rank to be terminal as the rank of colonel was reserved for only a select few officers.

Modern usage

In the United States Army and the United States Marine Corps (USMC), a lieutenant colonel typically commands a battalion/squadron-sized unit (300 to 1,200 Soldiers/Marines), with a major as executive officer (XO) and a command sergeant major/sergeant major (USMC) as principal NCO or senior enlisted adviser (SEA). A lieutenant colonel may also serve as a brigade/brigade combat team, regiment/regimental combat team, Marine Aviation Group (MAG), Marine Expeditionary Unit (MEU), or battalion task force executive officer. Lieutenant colonels routinely serve as principal staff officers, under a colonel as chief of staff, on a general staff ("G" staff) of a division, Marine Expeditionary Brigade (MEB), Marine Aircraft Wing (MAW), or Marine Logistics Group (MLG). These staff positions may include: G-1 (administration and personnel), G-2 (intelligence), G-3 (operations), G-4 (logistics), G-5 (civil/military affairs), or G-6 (computers and communications). Usage of "The G-n" may refer to either a specific staff section or the staff officer leading a section. Lieutenant colonels may also be junior staff at a variety of higher echelons.

In the United States Air Force, a lieutenant colonel is generally a squadron commander in the operations group, mission support group, or maintenance groups, or a squadron commander or division chief in a medical group. They may also serve as a Deputy Commander for Operations (DO) in a squadron in the operations group prior to assuming command of their own squadron (this is common for aeronautically rated officers in flying units), or as a deputy commander of a squadron in the maintenance, mission support or medical groups. Lieutenant colonels may also serve on general staffs and may be the heads of some wing staff departments. Senior lieutenant colonels occasionally serve as group commanders, most commonly in units of the Air Force Reserve Command or the Air National Guard.

In U.S. Army ROTC detachments, the commander is typically a lieutenant colonel, along with several majors, captains, and non-commissioned officers serving as assistants. In the U.S. Air Force, Air Force ROTC detachments may be commanded by full colonels or lieutenant colonels depending on the size of the detachment and the size of the associated college or university.

Non-military use

The rank of lieutenant colonel is also used by many large American municipal police departments, county sheriff's offices/departments, state highway patrols/state police and other law enforcement agencies for officers in senior administrative positions. The rank is not always called "lieutenant colonel," and in many cases – particularly with municipal police agencies – an alternate term such as "assistant chief" or "commander" is used, and only the insignia is retained. In some organizations, however, especially state police agencies, both the title and insignia are used. Occasionally, the rank is used in conjunction with, rather than instead of, an official title. For example, in the Texas Department of Public Safety, the head of the agency's patrol division is titled "Chief of the Highway Patrol", but holds the rank of a lieutenant colonel: this figure is thus referred to as "lieutenant colonel," not "chief".

Notable American lieutenant colonels

In popular culture


  1. ^ Shenk, Robert; The Naval Institute Guide to Naval Writing, 3rd ed.; US Naval Institute Press, Annapolis, MD; c2011; ISBN 1591148227 ISBN 9781591148227
  2. ^
  3. ^ "Preliminary-cloth.indd" (PDF). Retrieved 27 April 2012.
  4. ^ Jack (21 May 2009). "AP Style Book". Retrieved 27 April 2012.
  5. ^ "The Continental Army". U.S. Army Center of Military History (p. 13). 1 May 1982. Retrieved 3 July 2016.
  6. ^ "History of the lieutenant colonel rank". 9 April 2012. Retrieved 27 April 2012.
  7. ^ "The Continental Army". U.S. Army Center of Military History (p. 13 ff.). 1 May 1982. Retrieved 3 July 2016.
  8. ^ "The Continental Army". U.S. Army Center of Military History (p. 48). 1 May 1982. Retrieved 3 July 2016.
  9. ^ "The Continental Army". U.S. Army Center of Military History (pp. 127–128 ff.). 1 May 1982. Retrieved 3 July 2016.
  10. ^ "The Continental Army (pp. 128 & 145)". U.S. Army Center of Military History. 1 May 1982. Retrieved 3 July 2016.
  11. ^ "Lieutenant-Colonel And Brevet Major-General George A. Custer, U.S.A". Retrieved 27 April 2012.
  12. ^ "Brevet Rank In The Civil War". Retrieved 27 April 2012.
  13. ^
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United States uniformed services commissioned officer and officer candidate ranks
Pay grade / branch of service Officer
O-1 O-2 O-3 O-4 O-5 O-6 O-7 O-8 O-9 O-10 O-11 Special
Officer Candidate[1] Second lieutenant / Ensign First lieutenant / Lieutenant (junior grade) Captain / Lieutenant[6] Major / Lieutenant commander Lieutenant colonel / Commander Colonel / Captain Brigadier general / Rear admiral (lower half) Major General / Rear admiral[6] Lieutenant general / Vice admiral[6] General / Admiral[6] General of the Air Force / General of the Army / Fleet Admiral General of the Armies / Admiral of the Navy[2]
Midn / Cand 2ndLt 1stLt Capt Maj LtCol Col BGen MajGen LtGen Gen [5] [5]
Cadet / OT / OC 2nd Lt 1st Lt Capt Maj Lt Col Col Brig Gen Maj Gen Lt Gen Gen GAF[3] [5]
United States warrant officer ranks
W-1 W-2 W-3 W-4 W-5
USMC WO1.svg
US Navy WO1 insignia.svg
US Navy CW2 insignia.svg
US Navy CW3 insignia.svg
US Navy CW4 insignia.svg
US Navy CW5 insignia.svg
USAF CW5.png
USCG WO1 insignia.svg
USCG CW2 insignia.svg
USCG CW3 insignia.svg
USCG CW4 insignia.svg
[2] [2] [2] [2] [3]
[3] [3] [3] [3] [3]

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