| Unit | Soldiers | Commander |
|---|---|---|
| Fireteam | 4 | NCO |
| Squad/Section | 8–13 | Squad leader |
| Platoon | 26–55 | Platoon leader |
| Company | 80–225 | Captain/Major |
| Battalion | 300–1,300 | (Lieutenant) Colonel |
| Regiment/Brigade | 3,000–5,000 | (Lieutenant) Colonel/ Brigadier (General) |
| Division | 10,000–15,000 | Major General |
| Corps | 20,000–45,000 | Lieutenant General |
| Field army | 80,000–200,000 | General |
| Army group | 400,000–1,000,000 | Field Marshal |
| Army Region | 1,000,000–3,000,000 | Field Marshal |
| Army theater | 3,000,000–10,000,000 | Field Marshal |
In a military context, the chain of command is the line of authority and responsibility along which orders are passed within a military unit and between different units. Orders are transmitted down the chain of command, from a higher-ranked soldier, such as a commissioned officer, to lower-ranked personnel who either execute the order personally or transmit it down the chain as appropriate, until it is received by those expected to execute it.
In general, military personnel give orders only to those directly below them in the chain of command and receive orders only from those directly above them. A service member who has difficulty executing a duty or order and appeals for relief directly to an officer above his immediate commander in the chain of command is likely to be disciplined for not observing the chain of command. Similarly, an officer is usually expected to give orders only to his or her direct subordinate, even if it is just to pass an order down to another service member lower in the chain of command than said subordinate.
The concept of chain of command also implies that higher rank alone does not entitle a higher-ranking service member to give commands to anyone of lower rank. For example, an officer of unit "A" does not directly command lower-ranking members of unit "B", and is generally expected to approach an officer of unit "B" if he requires action by members of that unit. The chain of command means that individual members take orders from only one superior and only give orders to a defined group of people immediately below them.
If an officer of unit "A" does give orders directly to a lower-ranked member of unit "B", it would be considered highly unusual (a faux pas, or extraordinary circumstances, such as a lack of time or inability to confer with the officer in command of unit "B") as officer "A" would be seen as subverting the authority of the officer of unit "B". Depending on the situation or the standard procedure of the military organization, the lower-ranked member being ordered may choose to carry out the order anyway, or advise that it has to be cleared with his or her own chain of command first, which in this example would be with officer "B". Refusal to carry out an order is almost always considered insubordination, the only exception usually allowed is if the order itself is illegal (i.e., the person carrying out the order would be committing an illegal act). (See Superior Orders.)
In addition, within combat units, line officers are in the chain of command, but officers in specialist fields (such as medical, dental, legal, supply, and chaplain) are not, except within their own specialty. For example, a medical officer in an infantry battalion would be responsible for the combat medics in that unit but would not be eligible to command the battalion or any of its subordinate units.
The term is also used in a civilian management context describing comparable hierarchical structures of authority.
Read more about this topic: Command Hierarchy
Famous quotes containing the words chain of, chain and/or command:
“How have I been able to live so long outside Nature without identifying myself with it? Everything lives, moves, everything corresponds; the magnetic rays, emanating either from myself or from others, cross the limitless chain of created things unimpeded; it is a transparent network that covers the world, and its slender threads communicate themselves by degrees to the planets and stars. Captive now upon earth, I commune with the chorus of the stars who share in my joys and sorrows.”
—Gérard De Nerval (1808–1855)
“The name of the town isn’t important. It’s the one that’s just twenty-eight minutes from the big city. Twenty-three if you catch the morning express. It’s on a river and it’s got houses and stores and churches. And a main street. Nothing fancy like Broadway or Market, just plain Broadway. Drug, dry good, shoes. Those horrible little chain stores that breed like rabbits.”
—Joseph L. Mankiewicz (1909–1993)
“Universal empire is the prerogative of a writer. His concerns are with all mankind, and though he cannot command their obedience, he can assign them their duty. The Republic of Letters is more ancient than monarchy, and of far higher character in the world than the vassal court of Britain.”
—Thomas Paine (1737–1809)