Infantry Branch

Infantry Branch
Unit name	Infantry Branch
Type	Infantry
Role	Close combat, maneuver
Size	Varied

Infantry Branch

The Infantry Branch is the combat arm principally responsible for close-quarters engagement, maneuver, and seizing or holding terrain in land campaigns. It operates alongside Armored Corps, Artillery Corps, Engineer Corps, and Signal Corps formations, integrating with joint elements such as Air Force tactical aviation, Navy amphibious forces, and special operations units during expeditionary operations. Infantry units have been central to campaigns from the Napoleonic Wars through the World War I, World War II, the Korean War, the Vietnam War, the Gulf War, and contemporary operations in Afghanistan and Iraq.

History

Infantry evolved from medieval levy and professional mercenary troops into modern standing units during the rise of nation-states in the early modern period, influenced by reforms in the Thirty Years' War and the professionalization seen under figures like Frederick the Great and Napoleon Bonaparte. The Industrial Revolution and mass conscription transformed infantry tactics in the Crimean War and American Civil War, while the advent of machine guns and artillery in World War I forced trench warfare adaptations. Mechanization between the world wars introduced combined arms doctrine exemplified by the Blitzkrieg in World War II and the Soviet Deep Battle theory developed by Mikhail Tukhachevsky. Cold War innovations integrated infantry with armored and aerial firepower during crises such as the Berlin Blockade and proxy conflicts like the Korean War and Vietnam War. Post-Cold War operations in Somalia and peace enforcement missions in the Balkans further emphasized dismounted operations, urban warfare, and stability tasks.

Organization and Structure

Infantry formations are organized at multiple echelons: squads, platoons, companies (or troops), battalions, brigades, divisions, and corps, with national variations seen in structures used by the British Army, the United States Army, the French Army, and the Russian Ground Forces. A typical squad is led by a non-commissioned officer and falls under a platoon commanded by a lieutenant; company commanders are usually captains while battalion command is held by a lieutenant colonel. Modern modular brigades, such as brigade combat teams and light infantry brigade groups, permit task-organized deployment alongside armored brigades and airborne divisions. Administrative control often lies with a national infantry branch center or school, for example institutions comparable to the United States Army Infantry School, the Royal Military Academy Sandhurst, or the École d'Application de l'Infanterie.

Roles and Doctrine

Infantry doctrine prioritizes close combat, maneuver, reconnaissance, and holding key terrain in offensive, defensive, and stability operations. Doctrinal developments such as combined arms maneuver, fire and movement, and mission command have been codified in manuals used by the NATO alliance and national militaries influenced by experiences from the Battle of Stalingrad, the Battle of Fallujah, and counterinsurgency campaigns in Helmand Province. Light infantry emphasizes mobility and expeditionary reach for operations like airborne assaults by 101st Airborne Division-type units, while mechanized and motorized infantry integrate with main battle tanks and infantry fighting vehicles for armored warfare seen in operations by the Israeli Defense Forces and the Soviet Army. Urban operations doctrine addresses challenges documented in Siege of Sarajevo and Battle of Grozny.

Training and Recruitment

Recruitment pathways vary from conscription systems like those historically used by the Soviet Union to volunteer professional models employed by the United Kingdom and the United States. Entry training comprises basic military skills, weapons handling, fieldcraft, and small-unit tactics provided by institutions similar to the Royal Military College Duntroon and specialized centers for airborne, mountain, or jungle training modeled after programs such as the U.S. Army Ranger School and the French Foreign Legion's selection. Advanced training includes combined arms exercises, urban operations at facilities inspired by the Combat Training Centre concept, and joint exercises with partners during maneuvers like Operation Atlantic Resolve and Noble Eagle.

Equipment and Weapons

Infantry equipment ranges from personal weapons to squad support systems and transport. Small arms include rifles and carbines akin to the M16 rifle, the AK-47, and modern modular designs, supported by machine guns such as the M249 SAW and medium machine guns comparable to the PKM. Anti-armor capability is provided by shoulder-fired weapons like the AT-4, the Javelin, and guided missile systems similar to the Spike missile. Protective gear comprises helmets, body armor, and load-bearing systems; sensors, night-vision optics, and unmanned aerial systems derived from platforms used by Task Force Bayonet augment situational awareness. Mechanized infantry deploys in infantry fighting vehicles like the Bradley Fighting Vehicle or the BMP-2 and is supported by artillery assets such as the M777 howitzer and close air support from aircraft like the A-10 Thunderbolt II.

Notable Operations and Deployments

Infantry units have featured prominently in historic battles: the Napoleonic infantry columns at Austerlitz, the trench assaults of Somme in World War I, the urban fighting at Stalingrad and Berlin in World War II, amphibious landings at Normandy and Iwo Jima, and counterinsurgency and stabilization operations in Iraq and Afghanistan. Peacekeeping and humanitarian deployments include operations in Bosnia and Herzegovina and Rwanda. Recent expeditionary deployments by light and mechanized infantry occurred during Operation Enduring Freedom, Operation Iraqi Freedom, and multinational missions under NATO auspices such as the International Security Assistance Force.

Category:Infantry