When at full strength, an infantry regiment normally comprised two field battalions of about 800 men each or 8–10 companies. In some armies, an independent regiment with fewer companies was labelled a demi-regiment. A cavalry regiment numbered 600 to 900 troopers, making up a single entity.
Regiments have 3,000-to-5,000 soldiers and include several combat and support battalions. Each battalion has three-to-five line companies of 100-to-150 soldiers apiece. Companies break down into three-to-five platoons of 20-to-40 people, which in turn break down into squads of eight-to-12.
In the United States Army, a brigade is smaller than a division and roughly equal to or a little larger than a regiment.
NATO defines a battalion as "larger than a company, but smaller than a regiment" while "consisting of two or more company-, battery-, or troop-sized units and a headquarters." The standard NATO symbol for a battalion consists of a pair of vertical lines placed above a framed unit icon.
In the Australian Army, an infantry platoon has thirty-six soldiers organized into three eight-man sections and a twelve-man maneuver support section, with a lieutenant as platoon commander and a sergeant as platoon sergeant, accompanied by a platoon signaller and sometimes a platoon medic (full strength of forty men).
Three or four squads make up a platoon, which has 20 to 50 soldiers and is commanded by a lieutenant. Two or more platoons make up a company, which has 100 to 250 soldiers and is commanded by a captain or a major.
CORPS. A corps includes two to five divisions with anywhere between 20,000 and 45,000 soldiers. A lieutenant general is in command. The corps is the highest level of command that can provide operational direction for actual combat.
A company typically has 100 to 200 soldiers, and a battalion is a combat unit of 500 to 800 soldiers. Three to five battalions, approximately 1,500 to 4,000 soldiers, comprise a brigade.
Special Air Service Regiment (SASR), also called Special Air Service (SAS), Australian special forces unit that exists within Australia's Special Operations Command.
Australia. The marine and naval infantry designations are not, officially, applied to Australian Defence Force units, although some Australian Army units specialise in amphibious warfare, including 2nd Battalion, Royal Australian Regiment which retrained in an amphibious light infantry role from 2012.
In other branches of the army, as a rule, the highest formation is a regiment or brigade. On average, 12-24 thousand people are in the division.
A division is a large military unit or formation, usually consisting of between 6,000 and 25,000 soldiers. In most armies, a division is composed of several regiments or brigades; in turn, several divisions typically make up a corps.
Garrison is not defined by a set number of soldiers. It is the collective term for any body of troops stationed in a particular location, originally to guard it, but now often simply using it as a home base. The garrison is usually in a city, town, fort, castle, ship or similar.
division of platoon
…in an army is the squad, which contains 7 to 14 soldiers and is led by a sergeant. (A slightly larger unit is a section, which consists of 10 to 40 soldiers but is usually used only within headquarters or support organizations.) Three or four squads make up a platoon,…
An ABCT includes 87 Abrams, 152 Bradley IFVs, 18 M109s and 45 armed M113 vehicles. The operational cost for these combat systems is $66,735 per mile. The range of the Abrams limits the brigade to 330 km (205 miles), requiring fuel every 12 hours.
The squad is a soldier's most intimate group, consisting of six to ten soldiers. A squad is commanded by a staff sergeant or sergeant.
Salary of the Queen's Guards
The average salary for a soldier in the UK is £20,400 per annum. But the pay ranges drastically with the average salary of an infantryman being £18,932 per year, compared to the average salary of an Army Officer which is £28,556.
Guardsmen will have two hours on sentry duty and four hours off. However, do not be surprised if on some occasions you do not see the traditional guardsmen, in their scarlet tunics, particularly in August when other regiments often guard 'The King'.
The tradition of wearing bearskins on ceremonial occasions and for guard duty continues to this day. These headdresses are made with real bearskins. Each hat is 18 inches (46 cm) tall, and weighs 1.5 pounds (. 7 kg).
In the US military, a squad leader is a non-commissioned officer who leads a squad of typically 9 soldiers (US Army: squad leader and two fireteams of 4 men each) or 13 Marines (US Marine Corps: squad leader and three fireteams of 4 men each) in a rifle squad, or 3 to 8 men in a crew-served weapons squad.
For administrative purposes, the infantry was divided into companies consisting of 150 men, grouped into regiments of eight companies. Tactically, the infantry companies were organized into battalions and grouped with cavalry troops and artillery batteries to form brigades.
A Battlegroup is considered to be the smallest self-sufficient military unit that can be deployed and sustained in a theatre of operation. EU Battlegroups are composed of approximately 1,500 troops; plus command and support services.