Military rank

Military rank is a formal system of hierarchical relationships. It is used in armed forces, police, and intelligence agencies. This system defines dominance, authority, and responsibility within a group. It works through a chain of command. This is a succession of commanders superior to subordinates. This structure allows for organized collective action. As a person advances in rank, their responsibility grows. They gain more control over personnel, equipment, and missions. Rank also establishes a pay-grade. As rank increases, the amount of pay usually follows.

Most modern armed forces use ranking systems almost universally. Some communist states tried to abolish ranks in the past. The Soviet Red Army did this from 1918 to 1935. The Chinese People's Liberation Army removed them from 1965 to 1988. The Albanian People's Army also abolished ranks between 1966 and 1991. However, these states had to re-establish ranks later. They encountered operational difficulties with command and control. Without ranks, it was hard to manage large operations. This shows how vital hierarchy is for complex tasks.

Ancient Greece provides a fascinating look at early ranking. In Athens, citizens elected ten individuals called strategos every year. The term strategos means "army leader" or "general." These were political ranks rather than purely military ones. They were elected officials, similar to a modern police commissioner. The ten generals were equal to one another. They used a majority vote to decide battle plans. For example, they voted on plans at the Battle of Marathon in 490 BC. Below them, a taxiarchos acted like a modern brigadier. A syntagmatarchis led a regiment, similar to a colonel. A tagmatarches led a unit similar to a battalion. A lokhagos led an infantry unit of about 100 men. This is similar to a modern captain leading a company.

As Athens became a naval power, new roles emerged. A trièrarchos commanded a warship, or trireme. Different tasks were delegated to specialized subordinates on the ship. The kybernètès served as the helmsman. The keleustēs managed the rowing speed. The trièraulès was a flute player who kept the oarsmen in rhythm. Later, the naval strategos was replaced by a nauarchos. This role was a sea officer equivalent to an admiral. In Macedonia, the military became more professional under Philip II and Alexander the Great. They used phalangites, who were heavy infantry in a phalanx formation. These soldiers fought in a rectangular formation, typically eight men deep. Leaders stood at the head of each file to guide the troops.

The Roman military used a very different command structure. Formalized ranks became widespread after the reforms of Marius. In Rome, military command was often a political office. Commanders needed imperium, which was a politico-religious concept. During the imperial era, the emperor commanded each legion. He could appoint a deputy called a legate. Legates were often drawn from the Roman Senate for three-year terms. Below the legate were six military tribunes. One was a laticlavian tribune, who was second in command. The other five were tribuni angusticlavii, acting as staff officers. A praefectus castrorum was the third highest officer. This role was often filled by former centurions.

Roman legions were organized into specific units for combat. A legion was divided into ten cohorts. Each cohort contained three manipula. Each manipula had two centuries. A century consisted of 60 to 160 men. A centurion led each century and was assisted by an optio. Centuries were further broken into ten contubernia. Each contubernia consisted of eight soldiers. The most senior cohort-commanding centurion was the primus pilus. This system allowed the Romans to manage large numbers of soldiers. It created a clear path of leadership from the top down.

Other cultures used different mathematical systems for organization. The Mongol and Turkic traditions used a decimal system. This system is based on groups of ten. A squad of ten was called an aravt. Ten aravt made a company of 100, called a zuut. Ten zuut formed a regiment of 1,000, called a myangat. The largest unit was a tumen, which had 10,000 men. These large units were led by an appointed noyan. This decimal organization allowed for very efficient movement. It helped leaders coordinate massive armies across large distances.