First Lieutenant

See also: Lieutenant

First Lieutenant is a military rank and, in some forces, an appointment.

The rank of Lieutenant has different meanings in different military formations (see comparative military ranks), but the majority of cases it is common for it to be sub-divided into a senior (First Lieutenant) and junior (Second Lieutenant) rank. In navies it may relate to a particular post rather than a rank.

Contents

United Kingdom

British Army

In the British Army and Royal Marines, the rank above Second Lieutenant is simply Lieutenant, with no ordinal attached.

Before 1871, when the whole British Army switched to using the current rank of "Lieutenant", the Royal Artillery, Royal Engineers and Fusilier regiments used "First Lieutenant" and "Second Lieutenant".

Royal Navy

The First Lieutenant (1st Lt) in a Royal Navy ship is a post or appointment, rather than a rank.

Historically the lieutenants in a ship were ranked in accordance with seniority, with the most senior being termed the First Lieutenant and acting as the second-in-command, unless the ship was complemented with a Commander. Although lieutenants are no longer ranked by seniority, the post of "First Lieutenant" remains. In minor war vessels, destroyers and frigates the First Lieutenant is second in command, Executive Officer (XO) and head of the executive branch; in larger ships where a Commander of the warfare specialisation is appointed as the Executive Officer, a First Lieutenant is appointed as his deputy. The post of First Lieutenant in a shore establishment carries a similar responsibility to the First Lieutenant of a capital ship. Colloquial terms in the Royal Navy for the First Lieutenant include "Number One", "the Jimmy" (or "Jimmy the One") and "James the First" (a back-formation referring to James I of England).[1]

NATO Rank code Student Officer OF-1 OF-2 OF-3 OF-4 OF-5 OF-6
*		 OF-7
**		 OF-8
***		 OF-9
****		 OF-10
*****
Royal Navy Mid SLt Lt Lt Cdr Cdr Capt Cdre RAdm VAdm Adm Adm of the Fleet
Royal Marines 2Lt Lt Capt Maj Lt Col Col Brig Maj-Gen Lt Gen Gen
Army O Cdt 2Lt Lt Capt Maj Lt Col Col Brig Maj-Gen Lt Gen Gen FM
Royal Air Force OC APO / Plt Off Fg Off Flt Lt Sqn Ldr Wg Cdr Gp Capt Air Cdre AVM Air Mshl Air Chf Mshl MRAF

United States

U.S. Army, U.S. Marine Corps and U.S. Air Force

Insignia of a United States Army First Lieutenant.

In the United States Army, Air Force, and Marine Corps, a first lieutenant is a junior commissioned officer. It is just above the rank of second lieutenant and just below the rank of captain. It is equivalent to the rank of lieutenant (junior grade) in the other uniformed services.

A second lieutenant (grade O-1) is usually promoted to first lieutenant (grade O-2) after 18 months in the Army or 24 months in the Air Force[2] and Marine Corps. The difference between the two ranks is slight, primarily being experience and higher pay. It is not uncommon to see officers moved to positions requiring more experience after promotion to first lieutenant. For example, in the Army and Marine Corps these positions can include leading a specialty platoon, or assignment as the Executive Officer for a company-sized unit (65-150 soldiers). In the Air Force, a first lieutenant may be a flight commander or section's Officer in Charge with varied supervisory responsibilities, including supervision of as many as 100+ personnel, although in a flying unit, a first lieutenant is a rated officer (pilot, navigator, or air battle manager) who has just finished training for his career field and has few supervisory responsibilities.

U.S. Navy and U.S. Coast Guard

In the U.S. Navy and Coast Guard, First Lieutenant is a position title, instead of a rank. It is held by the officer in command of the deck department. On smaller ships, the First Lieutenant holds the rank of Lieutenant, junior grade or Ensign. On larger vessels, the position is held by a Lieutenant or, in the case of extremely large warships such as aircraft carriers, a Lieutenant Commander or even Commander. However, on submarines, where the deck department may only have a few junior sailors, the First Lieutenant may be a senior enlisted member, such as a First-Class Petty Officer or Chief Petty Officer.

W-1 W-2 W-3 W-4 W-5
Air Force: WO-1[1] CWO-2[1] CWO-3[1] CWO-4[1] CWO-5[1]
Army: WO1 CW2 CW3 CW4 CW5
Marine Corps: WO-1 CWO-2 CWO-3 CWO-4 CWO-5
Navy: WO-1[1] CWO-2 CWO-3 CWO-4 CWO-5
Coast Guard: [3] CWO-2 CWO-3 CWO-4 [3]
Public Health Service: [3] [3] [3] [3] [2]
National Oceanic and Atmospheric Administration: [2] [2] [2] [2] [2]
Grade inactive [1] Grade never created [2]
Grade is authorized for use by U.S. Code but has not been created [3]

Other countries

For other countries, the equivalent rank to a US Army First Lieutenant (O-2) is listed below.

References

  1. ↑ Partridge, Eric (1984). A Dictionary of Slang and Unconventional English (8th ed.). London and New York: Routledge. 
  2. ↑ United States Air Force. "AFI 36-2501, OFFICER PROMOTIONS AND SELECTIVE CONTINUATION", Air Force Instruction, 2009-08-17. Retrieved on 2010-01-23.