| Commander | |
|---|---|
 A Royal Navy commander's rank insignia | |
| Country |  United Kingdom |
| Service branch | |
| Abbreviation | Cdr |
| NATO rank code | OF-4 |
| Next higher rank | Captain |
| Next lower rank | Lieutenant commander |
| Equivalent ranks | |
Commander (Cdr) is a senior officer rank of the Royal Navy of the United Kingdom. It is immediately junior to captain and immediately senior to the rank of lieutenant commander. Officers holding the junior rank of lieutenant commander are not considered to be commanders.
The title (originally 'master and commander') [1] originated in around 1670 to describe Royal Navy officers who commanded ships of war too large to be commanded by a lieutenant, but too small to warrant the assignment of a post-captain, or (before about 1770) a sailing-master who was in charge of a ship's navigation. [2] These ships were usually unrated sloops-of-war of no more than 20 guns, fireships, hospital ships and store ships. [3] : 127 The commanding officer of this type of ship was responsible for both sailing and fighting the ship and was thus its 'master and commander'.
Before 1750, the rank was broadly considered as the limit of advancement for those without patronage, especially those who had been promoted from among a ship's crew. [4] By contrast, those with Parliamentary supporters or family connections were more likely to spend only a nominal period as master and commander of a sloop, before being elevated to post-captain. From 1718, the Navy List began recording an officer's date of appointment to the rank of master and commander, with the intention of establishing seniority as a guide to promotion, but there is little evidence that this carried through into actual appointments. [3] : 130
Over the later 18th century, the rank evolved into a more regular stage of service between lieutenant and captain. The Royal Navy shortened 'master and commander' to 'commander' in 1794; [5] however, the term 'master and commander' remained (unofficially) in common parlance for several years. [6] The term 'master commanding' (abbreviated as 'master com.' or 'mast. com.') was still recognised in 1851, with the Navy List for that year listing 21 ships commanded by Masters with this appellation . [7] : passim
The rank of commander was a popular recognition of service during the Napoleonic Wars, resulting in promotion of more commanders than there were commands; in 1812 the Navy List recorded 586 commanders against 168 available vessels. Commanders unable to secure a ship were left ashore on half-pay, with limited prospects for future advancement. This promotions bottleneck was addressed from 1827 with the introduction of commanders as a second-in-command on larger vessels. [8] : 98
In the 20th and 21st centuries, the rank has been assigned the NATO rank code of OF-4, matching the army rank of lieutenant colonel.
A commander in the Royal Navy is senior to an officer holding the rank of lieutenant commander but junior to a captain. A commander may command a frigate, destroyer, submarine, mine countermeasures squadron, fishery protection squadron, patrol boat squadron, aviation squadron or shore installation, or may serve on a staff. Formerly equivalent to the Army rank of major, [9] a commander is now equivalent in rank to a lieutenant colonel in the British Army or a wing commander in the Royal Air Force. The rank of wing commander was derived from the naval rank of commander via the usage in the World War I Royal Naval Air Service.
The rank insignia of a commander features three rings of gold braid with a loop in the upper ring. [10]
Commodore is a senior naval rank used in many navies which is equivalent to brigadier or brigadier general and air commodore. It is superior to a navy captain, but below a rear admiral. It is either regarded as the most junior of the flag officers rank or may not hold the jurisdiction of a flag officer at all depending on the officer's appointment. Non-English-speaking nations commonly use the rank of flotilla admiral, counter admiral, or senior captain as an equivalent, although counter admiral may also correspond to rear admiral lower half abbreviated as RDML.
Military ranks are a system of hierarchical relationships, within armed forces, police, intelligence agencies or other institutions organized along military lines. The military rank system defines dominance, authority, and responsibility in a military hierarchy. It incorporates the principles of exercising power and authority into the military chain of command—the succession of commanders superior to subordinates through which command is exercised. The military chain of command constructs an important component for organized collective action.
Lieutenant Commander is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding rank in most armies and air forces is major, and in the Royal Air Force and other Commonwealth air forces is squadron leader. It is roughly equivalent to the Corvette Captain rank in central European countries and the Captain 3rd rank rank in eastern European/CIS countries.
Commander is a common naval officer rank as well as a job title in many armies. Commander is also used as a rank or title in other formal organizations, including several police forces. In several countries this naval rank is termed frigate captain.
First lieutenant is a commissioned officer military rank in many armed forces; in some forces, it is an appointment.
Wing commander is a senior officer rank used by some air forces, with origins from the Royal Air Force. The rank is used by air forces of many countries that have historical British influence.
The commanding officer (CO) or commander, or sometimes, if the incumbent is a general officer, commanding general (CG) or general officer commanding (GOC), is the officer in command of a military unit. The commanding officer has ultimate authority over the unit, and is usually given wide latitude to run the unit as they see fit, within the bounds of military law. In this respect, commanding officers have significant responsibilities, duties, and powers.
In the rating system of the Royal Navy used to categorise sailing warships, a sixth-rate was the designation for small warships mounting between 20 and 28 carriage-mounted guns on a single deck, sometimes with smaller guns on the upper works and sometimes without. It thus encompassed ships with up to 30 guns in all. In the first half of the 18th century the main battery guns were 6-pounders, but by mid-century these were supplanted by 9-pounders. 28-gun sixth rates were classed as frigates, those smaller as 'post ships', indicating that they were still commanded by a full ('post') captain, as opposed to sloops of 18 guns and less under commanders.
Master commandant was a rank within the early United States Navy. Both the Continental Navy, started in 1775, and the United States Navy created by the United States Congress, in 1796, had just two commissioned ranks, lieutenant and captain. Master commandant, who would command smaller vessels, was used, unofficially, as early as 1799. The rank was made official in 1806. The name of the rank was changed to "commander" in 1837.
Major (Maj) is a military rank which is used by both the British Army and Royal Marines. The rank is superior to captain and subordinate to lieutenant colonel. The insignia for a major is a crown. The equivalent rank in the Royal Navy is lieutenant commander, and squadron leader in the Royal Air Force.
In the United States Army, Marine Corps, Air Force and Space Force, major is a field officer above the rank of captain and below the rank of lieutenant colonel. It is equivalent to the naval rank of lieutenant commander in the other uniformed services. Although lieutenant commanders are considered junior officers by their services, the rank of major is that of a senior officer in the United States Army, the United States Marine Corps, and the United States Air Force.
Commodore was an early title and later a rank in the United States Navy, United States Coast Guard and the Confederate States Navy, and also has been a rank in the United States Public Health Service Commissioned Corps and the National Oceanic and Atmospheric Administration Commissioned Officer Corps and its ancestor organizations. For over two centuries, the designation has been given varying levels of authority and formality.
In the uniformed services of the United States, captain is a commissioned-officer rank. In keeping with the traditions of the militaries of most nations, the rank varies between the services, being a senior rank in the naval services and a junior rank in the ground and air forces. Many fire departments and police departments in the United States also use the rank of captain as an officer in a specific unit.
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The rank is equal to the army rank of colonel and air force rank of group captain.
In the United States, commander is a military rank that is also sometimes used as a military billet title—the designation of someone who manages living quarters or a base—depending on the branch of service. It is also used as a rank or title in non-military organizations, particularly in law enforcement.
The master, or sailing master, is a historical rank for a naval officer trained in and responsible for the navigation of a sailing vessel.
Lieutenant (abbreviated Lt, LT (U.S.), LT(USN), Lieut and LEUT, depending on nation) is a commissioned officer rank in many English-speaking nations' navies and coast guards. It is typically the most senior of junior officer ranks. In most navies, the rank's insignia may consist of two medium gold braid stripes, the uppermost stripe featuring an executive curl in many Commonwealth of Nations; or three stripes of equal or unequal width.
Royal Navy ranks, rates, and uniforms of the 18th and 19th centuries were the original effort of the Royal Navy to create standardized rank and insignia system for use both at shore and at sea.
In the United States Navy, United States Coast Guard, United States Public Health Service Commissioned Corps (USPHS), and National Oceanic and Atmospheric Administration Commissioned Officer Corps, captain is the senior-most commissioned officer rank below that of flag officer. The equivalent rank is colonel in the United States Army, Air Force, Space Force, and Marine Corps.
