Armoured warfare

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Armoured warfare uses tanks and other armoured fighting vehicles to win battles and move quickly on the battlefield. It relies on the mix of protection, firepower, and mobility, and it works best when armoured units support infantry, artillery, engineers, and air power.

A quick history
Armoured warfare began in World War I as a way to break the stalemate of trench fighting. Early tanks were slow and often unreliable, but they showed the idea: move through enemy lines while protected from small arms, and use speed to outflank defenders. Britain and France introduced tanks in 1915–1916. In the following year, tanks fought in several campaigns, including the breakthrough at Cambrai, though results were mixed and the weapons were still immature.

Between the wars, many countries studied how best to use tanks. Some theorists proposed independent armoured forces that could penetrate deep into enemy territory, while others wanted to keep tanks integrated with existing infantry or cavalry. Practical restrictions—reliability, maintenance, and limited budgets—meant most nations kept mixed forces rather than fully mechanised armies for much of the period. Still, important ideas formed about speed, surprise, and combined arms.

World War II and the idea of blitzkrieg
In World War II, German forces popularised a form of armoured warfare that combined fast tanks with mechanised infantry and air support to break through enemy lines and disrupt command and supply. This approach, often called blitzkrieg, showed how concentrated armour could overwhelm defenders if it could operate with
surprise and speed. Other nations also integrated tanks with infantry and artillery, and the war saw rapid improvements in tank design, communications, and tactics.

The Soviet Union and the United States built large tank forces and developed doctrines that stressed concentrations of armour, sometimes under strong command-and-control, while the Western Allies developed more flexible, mobile warfare and better anti-tank measures. The war produced famous tanks such as the Soviet T-34, the German Panzer fleet, and the American and British tanks that would shape thinking for decades.

From tanks to main battle tanks
After World War II, armies moved toward main battle tanks (MBTs): heavily armed, well-armoured, and mobile vehicles designed to take on other tanks while supporting infantry and other forces. The MBT concept blended the best elements of earlier light, medium, and heavy tanks and became the core of many modern armies. NATO and the Soviet-led bloc built large, capable tank forces and developed new weapons, armour, and electronics to keep armour effective on the changing battlefield.

Key ideas in modern armoured warfare
- Combined arms: Tanks work best when they are part of a team that includes infantry, artillery, engineers, air power, and anti-tank forces.
- Mobility and protection: Modern tanks aim to stay fast and well protected, using composite armour, advanced fire control, and, in many cases, active protection systems.
- Firepower and targeting: Tank guns, machine guns, and missiles are paired with advanced sensors to find and engage targets quickly.
- Vulnerabilities: Tanks are effective in open terrain but can be exposed in urban settings or against well-coordinated anti-tank teams, air attack, or guided missiles. Top and rear exposures, as well as vulnerable tracks and engines, are common weak spots.
- Anti-tank measures: Since the 1960s, infantry and vehicles have used portable anti-tank missiles, guided missiles in infantry and vehicle mounts, and various tanks and aircraft have been equipped to counter armour. Modern teams often rely on protection systems and airpower to keep armour at risk from missiles and aircraft.
- Air power and anti-air: Tanks are highly visible and vulnerable to air attack. Most armies use mobile air defense to protect armour, and aircraft can be used to disrupt armour advances or target rear areas.

Modern fighting and examples
Today’s armour operates in a world of missiles, drones, and smart weapons. Tanks are frequently accompanied by infantry fighting vehicles, self-propelled guns, and air support. Anti-tank missiles, loitering munitions, and precision-guided weapons mean armour must be protected and modernised with active protection systems. Helicopters and attack aircraft remain important for destroying tanks from the air, while drones can spot targets and guide fires.

The core lesson of armoured warfare remains the same: when tanks and other armoured vehicles can work together with infantry, artillery, engineers, and air forces, they can shape battles, break through defenses, and seize ground more quickly than infantry alone. But success depends on joint action, good planning, and the ability to adapt to new weapons and shifting combat conditions.