Army

Army
Unit name	Army

Army. An army is the principal land warfare force of a nation or state, typically organized for sustained combat operations. It is a core component of a nation's armed forces, alongside services like the navy and air force. The primary mission of an army is to defend national territory, project power, and achieve strategic objectives through ground combat, often in coordination with other military branches.

History

The concept of organized land forces dates to ancient civilizations, with early examples including the Assyrian military machine, the Macedonian phalanx under Alexander the Great, and the highly disciplined legions of the Roman Empire. The medieval period saw the dominance of heavy cavalry, such as the knights of feudal Europe, while the Mongol Empire under Genghis Khan demonstrated revolutionary mobility and tactics. The early modern era introduced professional standing armies, exemplified by the Prussian Army of Frederick the Great, and the mass conscript forces of the French Revolutionary Wars. The Industrial Revolution brought transformative changes, with the American Civil War and World War I showcasing the devastating impact of rifles, artillery, and trench warfare. The Second World War saw the advent of blitzkrieg and combined arms operations, while the Cold War was defined by the confrontation between the United States Army and the Soviet Army, leading to developments in nuclear and conventional doctrine.

Organization and structure

Modern armies are typically organized into a hierarchical structure to facilitate command and control. The largest permanent formation is often the corps, which is composed of multiple divisions. Divisions, such as infantry, armoured, or airborne divisions, combine various brigades and support units. Brigades are made up of several battalions, which are the primary combat units for specific arms like infantry, armour, or artillery. Battalions consist of companies or batteries, which are further divided into platoons and squads. This structure is supported by extensive logistics branches, engineer units, intelligence corps, and communications services. Key command elements include the Pentagon for the U.S. Department of Defense and the British Ministry of Defence.

Personnel and training

Army personnel are categorized as either officers, who hold command and leadership positions, or enlisted soldiers, who form the bulk of the force. Officers are often commissioned from institutions like the United States Military Academy at West Point or the Royal Military Academy Sandhurst. Enlisted soldiers undergo basic combat training followed by advanced individual training in a specific military occupational specialty. Specialized units, such as the U.S. Army Special Forces (Green Berets) or the British Special Air Service, require additional rigorous selection and training. Many nations utilize a mix of professional volunteers and conscripts, with countries like Israel and South Korea maintaining large conscript armies through programs like the Israel Defense Forces.

Equipment and technology

The modern army's equipment spans a wide spectrum of technology. Primary infantry weapons include assault rifles like the M16 and AK-47, supported by machine guns, mortars, and anti-tank missiles. Armoured fighting vehicles form a critical component, from main battle tanks like the M1 Abrams and Leopard 2 to infantry fighting vehicles such as the M2 Bradley. Artillery systems range from towed howitzers to self-propelled platforms like the M109 and long-range rocket systems including the M270 MLRS. Army aviation provides reconnaissance and attack capabilities with helicopters like the AH-64 Apache and UH-60 Black Hawk. Modern armies also heavily invest in command and control, cyberwarfare, drones like the MQ-1 Predator, and advanced body armor and night vision equipment.

Roles and functions

The fundamental role of an army is to engage in and win the nation's wars through decisive land combat. This encompasses offensive operations to defeat enemy forces and seize territory, and defensive operations to protect vital areas. Beyond major combat, armies are frequently engaged in counterinsurgency operations, as seen in Afghanistan and Iraq, and peacekeeping missions under the auspices of the United Nations. They provide crucial support to civil authorities during domestic disasters or emergencies, a function often termed military aid to the civil authorities. Other key functions include deterrence of aggression, security cooperation with allied nations like those in NATO, and the protection of critical national infrastructure.

Notable armies

Throughout history, certain armies have achieved particular renown for their effectiveness, influence, or scale. The Imperial Japanese Army was a dominant force in the Asia-Pacific theater during World War II. The Wehrmacht, particularly its Heer branch, was noted for its operational prowess in the early years of the same conflict. The People's Liberation Army of China is currently the world's largest standing military force. The French Army has a long and distinguished history, from the era of Napoleon to modern operations in the Sahel. The Indian Army is one of the largest volunteer armies and has extensive experience in high-altitude warfare and counterinsurgency. Historical forces like the Ottoman Army, the Grande Armée of Napoleon Bonaparte, and the British Army during the height of the British Empire have also left indelible marks on military history.

Category:Military