Changes in Warfare c.1500 to the Present

Early Modern Warfare (1500–1700): The Gunpowder Revolution

Medieval warfare was transformed by the widespread adoption of gunpowder weapons in the 16th century.

Key changes:

• Cannon: Heavy artillery could breach medieval castle walls, ending the defensive dominance of stone fortifications. The siege became the dominant form of warfare.
• Muskets: Replaced the longbow; easier to train soldiers to use; devastating in massed volleys. Required new tactics — soldiers drilled to fire, reload and advance in formation.
• Impact on fortifications: "Star forts" (bastioned fortifications with angled walls to deflect cannon fire) replaced medieval castles. E.g. Caernarfon Castle adapted; Fort Belan (Wales) built in the 18th century.
• The English Civil War (1642–51): Parliament's New Model Army — professionally organised, with regular pay, uniform equipment and merit-based promotion. Defeated the Royalists. Showed the importance of discipline, tactics and firepower over individual bravery.

18th and 19th Century Warfare: Industrialisation and Total War

Napoleonic Wars (1803–1815): Large conscript armies; nationalism as motivation; combined arms (infantry, cavalry, artillery). Wellington's Peninsula Campaign showed British professional army's superiority in supply and discipline. The Battle of Waterloo (1815) ended Napoleon's wars.

The Industrial Revolution's impact on warfare:

• Railways: troops and supplies moved faster; strategic importance.
• Steam-powered warships (ironclads); the Battle of Hampton Roads (1862, US Civil War) showed the obsolescence of wooden warships.
• The telegraph: for the first time, commanders could communicate in real time over long distances.
• Mass production: factories produced standardised weapons and equipment on an unprecedented scale.

The Crimean War (1854–56): Famous for mismanagement (the Charge of the Light Brigade) and Florence Nightingale's nursing reforms. First war covered by photography and newspaper correspondents — public opinion became a factor in war.

The First World War (1914–1918): Industrial Total War

WWI was the first truly industrial war — fought by mass conscript armies equipped with industrial weapons.

Key features:

• Trench warfare: Stalemate on the Western Front — artillery, barbed wire and machine guns made attacks suicidal; the Battle of the Somme (1 July 1916) — 57,470 British casualties on the first day.
• New weapons: Poison gas (chlorine and phosgene first used 1915); tanks (first used Battle of Flers-Courcelette, 1916); aircraft (initially for reconnaissance, then fighter planes and bombers).
• Total war: Civilians mobilised — women in factories, food rationing, government control of industry, propaganda, conscription (1916).
• Impact on Wales: 280,000 Welsh served; "Pals' Battalions" devastated communities. The Swansea Pals suffered heavily at Mametz Wood (Battle of the Somme, July 1916).

The Second World War (1939–1945): Air Power and Total Mobilisation

Blitzkrieg ("lightning war"): German tactics using combined arms — tanks, motorised infantry and air support in rapid assault. Defeated France in six weeks (1940).

The Blitz: German bombing of British cities (September 1940 – May 1941) — intended to break civilian morale. Swansea was bombed heavily ("Three Nights' Blitz," February 1941). Civilian resilience was crucial to continued resistance.

New technologies: Radar (British invention, crucial in the Battle of Britain); nuclear weapons (Hiroshima and Nagasaki, August 1945); sonar for anti-submarine warfare.

Total mobilisation: Rationing; women in armed forces and war industry; evacuation of children; government control of the whole economy.

Warfare Since 1945: Nuclear Age and Asymmetric Conflict

Cold War: Nuclear deterrence — the doctrine of Mutual Assured Destruction (MAD) prevented direct superpower conflict. Britain became a nuclear power in 1952.

Korean War (1950–53) and Falklands War (1982): Conventional warfare; Falklands showed importance of air power (Harrier jets), submarines, and rapid amphibious deployment.

Gulf Wars (1991, 2003): "Precision warfare" — cruise missiles, smart bombs, satellite-guided weapons. Reduced civilian casualties in theory but created new forms of warfare.

Counterinsurgency and asymmetric warfare: British forces in Northern Ireland (1969–2007); Afghanistan (2001–2014); Iraq (2003–2009). Guerrilla tactics, IEDs, propaganda — challenging for conventional armies. Lessons about "hearts and minds."

Key Themes for WJEC

Technology as driver: Each major change in warfare was driven by technological development — gunpowder, industrialisation, airpower, nuclear weapons, digital warfare. Total war: From purely military conflicts to involving whole populations (WWI, WWII rationing, conscription, evacuation). Continuity: Fear, courage, leadership and the human cost of war remain constant.