A battalion is a military unit, typically consisting of 300 to 1,200 soldiers commanded by a lieutenant colonel, and subdivided into a number of companies. In some countries, battalions are exclusively infantry, while in others battalions are unit-level organizations.
A company is a military unit, typically consisting of 80–250 soldiers and usually commanded by a major or a captain. Most companies are formed of three to seven platoons, although the exact number may vary by country, unit type, and structure.
A platoon is a military unit typically composed of two or more squads, sections, or patrols. Platoon organization varies depending on the country and the branch, but a platoon can be composed of 50 people, although specific platoons may range from 10 to 100 people. A platoon is typically the smallest military unit led by a commissioned officer. The platoon leader is usually a junior officer—a second or first lieutenant or an equivalent rank. The officer is usually assisted by a platoon sergeant.
The National Revolutionary Army, sometimes shortened to Revolutionary Army (革命軍) before 1928, and as National Army (國軍) after 1928, was the military arm of the Kuomintang from 1925 until 1947 in China. It also became the regular army of the Republican era during the KMT's period of party rule beginning in 1928. It was renamed the Republic of China Armed Forces after the 1947 Constitution, which instituted civilian control of the military.
A section is a military sub-subunit. It usually consists of between 6 and 20 personnel. NATO and US doctrine define a section as an organization "larger than a squad, but smaller than a platoon." As such, two or more sections usually make up an army platoon or an air force flight.
The People's Liberation Army Ground Force is the land-based service branch of the People's Liberation Army and the largest and oldest branch of the entire Chinese armed forces. The PLAGF can trace its lineage from 1927 as the Chinese Red Army; however, it was not officially established until 1948.
The South African Army Infantry Formation supervises all infantry within the South African Army.
A Marine expeditionary brigade (MEB) is a formation of the United States Marine Corps, a Marine air-ground task force of approximately 14,500 Marines and sailors constructed around a reinforced infantry regiment, a composite Marine aircraft group, a combat logistics regiment and a MEB command group. The MEB, commanded by a general officer, is task-organized to meet the requirements of a specific situation. It can function as part of a joint task force, as the lead echelon of the Marine expeditionary force (MEF), or alone. It varies in size and composition, and is larger than a Marine expeditionary unit (MEU) but smaller than a MEF. The MEB is capable of conducting missions across the full range of military operations.
The Estonian Land Forces, unofficially referred to as the Estonian Army, is the name of the unified ground forces among the Estonian Defense Forces where it has an offensive military formation role. It is currently the largest Estonian military branch with the average size during peacetime of approximately 6,000 soldiers, conscripts, and officers.
The Lagunari Regiment "Serenissima" is the an active unit of Italian Army's infantry arm's amphibious Lagunari speciality. The name of the specialty comes from the Italian word for lagoon, while the regiment's name "Serenissima" commemorates the Most Serene Republic of Venice. The regiment is based in Venice and assigned to the Cavalry Brigade "Pozzuolo del Friuli". The "Pozzuolo del Friuli" brigade forms, together with the Italian Navy's Third Naval Division, and San Marco Marine Brigade, the Italian Armed Forces' Sea Projection Force.
The 11 Air Assault Brigade is the rapid light infantry brigade of the Royal Netherlands Army, focused on conducting air assault operations. Troops of the brigade are qualified to wear the maroon beret upon completion of the demanding training course, those qualified as military parachutists wear the appropriate parachutist wings. The brigade was handed the name '7 December' when the First Division 7 December was disbanded in 2004.
The Dominican Army (Spanish: Ejército de República Dominicana, is one of the three branches of the Armed Forces of the Dominican Republic, together with the Navy and the Air Force.
The Mechanized Brigade "Legnano" was a mechanized brigade of the Italian Army. Its core units were mechanized infantry battalions. The brigade's headquarters was in the city of Bergamo in Lombardy. The name of the brigade commemorates the Lombard League victory in the Battle of Legnano in 1176 and its coat of arms depicts the Monument to the Warrior of Legnano in the centre of Legnano.
Operation Shenandoah II was a security operation conducted during the Vietnam War by the U.S. 1st Infantry Division to secure and repair Highway 13, South Vietnam from 29 September to 19 November 1967.
The Second Sino-Japanese War was fought between 1937 and 1945, involving the military forces of the China and Japan.
The 5th Infantry Regiment "Aosta" is an active unit of the Italian Army based in Messina in Sicily. The regiment is part of the Italian army's infantry corps and operationally assigned to the Mechanized Brigade "Aosta".
The 82nd Infantry Regiment "Torino" is an active unit of the Italian Army based in Barletta in Apulia. Formed in 1884 and named for the city pf Turin the regiment is part of the Italian Army's infantry arm and assigned to the Mechanized Brigade "Pinerolo".
The 151st Infantry Regiment "Sassari" is an active unit of the Italian Army based in Cagliari in Sardinia. The regiment is part of the Italian Army's infantry arm and assigned to the Mechanized Brigade "Sassari".
The 152nd Infantry Regiment "Sassari" is an active unit of the Italian Army based in Sassari in Sardinia. The regiment is part of the Italian Army's infantry arm and assigned to the Mechanized Brigade "Sassari".
Iraq (2015–present)
Iraqi Ground Forces Command 
