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NotesHistoryTopic 7.2
Unit 7 · Paper 2 · Causes and effects of medieval wars (750–1500) · Topic 7.2

IB History — The nature and practice of medieval warfare

Topic 7.2 of IB History covers The nature and practice of medieval warfare, which is part of Unit 7: Paper 2 · Causes and effects of medieval wars (750–1500). Students explore key concepts including How medieval wars were fought, Warfare in practice — the Crusades, Warfare in practice — the Hundred Years' War. A strong understanding of the nature and practice of medieval warfare is essential for IB History exams and builds the foundation for connected topics across the syllabus.

Exam technique guidePractice questions

Key concepts in The nature and practice of medieval warfare

Key Idea: Medieval war was not really about brave charges — it was about sieges, supply and technology. Two forces ruled the age: the armoured knight on horseback and the castle that a handful of men could hold. Across the Middle Ages, both were slowly broken — by paid professional armies, by the longbow, and finally by gunpowder cannon. Whoever combined the right method with money, leadership and supply usually won. For Paper 2 you use the Crusades and the Hundred Years' War as your two big case studies to prove this.

This topic asks how medieval people fought and why those methods decided who won. The trap is to tell exciting battle stories. The reward is to argue — to show how a weapon, a wall or a supply line changed an outcome. Master three things and you can answer almost any question here: the tools of war, and the two case studies that show them in action.

The tools of medieval war

  • Knights and cavalry — armoured nobles on warhorses whose mass {{mounted charge|a gallop of armoured horsemen crashing into enemy lines}} could shatter foot soldiers in seconds. War and noble status were tied together.
  • Feudal levy → mercenaries — lords owed a king only about 40 unpaid days of service, so armies melted away mid-campaign. Kings shifted to paid soldiers who stayed all year — which tied war-making to royal money.
  • Castles and sieges — pitched battles were rare; the real prize was the castle. A small garrison behind thick concentric walls could hold a whole region, so taking fortresses, not winning open battles, won territory.
  • The longbow — a 6-foot bow firing 10–12 armour-piercing arrows a minute. Massed 'arrow storms' let cheap common archers destroy expensive noble cavalry.
  • Gunpowder and cannon — clumsy at first, but by the mid-1400s siege guns smashed walls that had stood for centuries, and any poorly-trained man with a firearm could kill a knight.
Every siege came down to one of four choices, and a good essay names them: blockade (starve them out), battering ram (smash the gate), trebuchet (a counterweight sling hurling 100-kg stones), or mining (tunnel under a tower, prop it, burn the props so it collapses). At Rochester in 1215 King John's men mined a tower using the fat of forty pigs to burn the props — engineering, not open battle, took the castle.

Case study 1 — The Crusades

Crusaders (Western way of war): Heavy armoured knights charging in a tight mass. Devastating shock — if it could catch the enemy. Slow, heavy and exhausted by heat and thirst. Won by holding formation and its infantry screen.

Turks / Muslims (Eastern way of war): Light, fast {{mounted archers|horsemen shooting bows at a gallop}}. Fired arrows then wheeled away before knights closed. Used speed and space to wear the enemy down. Could feign retreat, then surround a strung-out foe.

Antioch, 1098 — the near-disaster An eight-month siege that the crusaders only won through treachery when a guard let them in — then a Muslim relief army trapped THEM inside, until the starving crusaders marched out and won anyway.

Jerusalem, 1099 — the goal reached Genoese ships were broken up on the coast so their timber could be hauled inland to build siege towers. The walls were stormed in July 1099 — proof that sea-borne supply decided the siege.

Krak des Chevaliers — holding the land A double-ringed fortress in Syria with its own water and food stores. A small garrison could defy a whole army, letting a few thousand settlers hold the Levant for nearly two centuries.

Hattin, 1187 — the reversal Saladin united Egypt and Syria, lured the crusaders across a waterless plateau in blazing heat, surrounded the parched army and destroyed it — and retook Jerusalem that October.

Important: More crusaders died of hunger, thirst and disease than of enemy weapons. The Italian city-states — Genoa, Pisa and Venice — kept them alive by shipping troops, food and siege timber, and blockading enemy ports. When Saladin used thirst and terrain at Hattin (1187) to shatter the field army, the castles and cities fell with it. Tactics and supply, not brute force, decided the outcome.

Case study 2 — The Hundred Years' War (1337–1453)

England repeatedly beat larger French armies with the same recipe — not the longbow alone, but a combined system. Say the words 'combined tactics' in your essay: chosen defensive ground, longbowmen on the flanks behind sharpened stakes, and dismounted {{men-at-arms|heavily armoured knights fighting on foot}} holding a solid centre. The French had to attack uphill through mud and arrows into an unbroken line — exactly the fight England wanted.

BattleYearWhy it mattered
Sluys1340Destroyed the French fleet and gave England control of the Channel — without it, no army reaches France
Crécy1346First great proof that archers plus dismounted knights could annihilate heavy cavalry
Poitiers1356Same method again — the French king, John II, was captured and held for a huge ransom
Agincourt1415Henry V's tired, outnumbered army won as French knights drowned in deep mud
  • Chevauchée — most of the war was not battle but the {{chevauchée|a fast, destructive mounted raid deep into enemy land}}: burning crops, farms and towns to wreck France's economy, humiliate its king and bait its army into the open.
  • Paid, contracted armies — England replaced the 40-day feudal levy with soldiers hired under {{indenture|a written contract to supply paid troops for a set wage and time}}, so armies could campaign in France for whole seasons.
  • Gunpowder — in sieges, not big battles — early guns were clumsy; cannon's real impact came late and against walls. French artillery eventually helped drive the English out.
  • Sea power — victory at Sluys (1340) kept the Channel English and made the whole war possible.
Rochester 1215 (mining), Antioch 1098, Jerusalem 1099, Hattin 1187, Sluys 1340, Crécy 1346, Poitiers 1356, Agincourt 1415, Constantinople 1453 (cannon end the invincible fortress). One dated fact per argument is what separates a Level 5 answer from a vague one.
IB-style questionCompare and contrast[15 marks]

Compare and contrast the practice of warfare in two medieval conflicts.

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To reach Level 5 on a 15-mark Paper 2 essay: (1) open with a clear thesis that answers the question directly; (2) structure by theme — sieges, tactics, supply — never by narrating one war then the other; (3) anchor every argument with a dated example (Hattin 1187, Agincourt 1415, Constantinople 1453); (4) show a counter-argument — technology mattered, but so did money, leadership and supply; and (5) end with a weighed judgement that says which factor mattered most and why. Argue, don't describe — that single habit is what earns the marks.

What you'll learn in Topic 7.2

  • 7.2.1 How medieval wars were fought
  • 7.2.2 Warfare in practice — the Crusades
  • 7.2.3 Warfare in practice — the Hundred Years' War
Suggested study order: Read the notes for each sub-topic below → test yourself with flashcards → attempt practice questions → review exam technique.

Study resources — 7.2 The nature and practice of medieval warfare

7.2.1

How medieval wars were fought

Notes
7.2.2

Warfare in practice — the Crusades

Notes
7.2.3

Warfare in practice — the Hundred Years' War

Notes

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Topic 7.2 The nature and practice of medieval warfare forms a core part of Unit 7: Paper 2 · Causes and effects of medieval wars (750–1500) in IB History. Mastering these concepts will strengthen your understanding of connected topics across the syllabus and prepare you for exam questions that require analysis, evaluation, and real-world application.

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