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The big idea: A medieval war never has just one effect. It reshapes who rules, where borders sit, how strong the crown becomes, how ordinary people live — and whether the peace even lasts.
Examiners reward students who sort these effects into clear categories instead of telling the story blow by blow. This micro gives you six categories to reach for in any essay.
Think of a war like a stone dropped into a pond. The battle is the splash, but the ripples keep spreading for years.
Some ripples are political, some are economic, some are human. A good historian traces each one separately rather than lumping them together.
Paper 2 questions almost never ask you to describe a war. They ask you to weigh its consequences — for example, "Examine the effects of one medieval war on the power of a monarch."
To answer well you need a mental checklist of the kinds of effect a war can have, so you never miss a whole area of impact.
- Political and dynastic — who rules, which family holds power, and the balance of power between states
- Territorial — land gained or lost, and borders redrawn
- Growth of royal power and the state — taxation, administration and standing forces the crown builds up
- Social and economic — trade, farming, and changes to how society is organised
- Human cost — deaths, displacement, famine and destroyed communities
- Peace settlements — the treaties that end (or fail to end) the fighting
Spot it: the memory hook "PT-GSH-P": Political · Territorial · Growth of the state · Social-economic · Human cost · Peace settlement. Six drawers to file every effect into — miss a drawer and you miss marks.
The three "power" categories
The first three drawers all deal with power — who has it, over what land, and how tightly they can hold it.
These are usually the most obvious effects of a war, and the ones examiners expect you to lead with.
1 · Political and dynastic effects
Wars change rulers. A defeated king may be killed, deposed or replaced, and a whole dynasty can rise or fall. The Battle of Hastings in 1066 destroyed the Anglo-Saxon dynasty and put the Normans on the English throne. Wars also shift the balance of power between states, making one stronger and its rivals weaker.
2 · Territorial changes
Wars redraw the map. Lands are conquered, lost or swapped, and borders move. During the Hundred Years' War (1337–1453) England held large parts of France for decades, then lost almost all of it, leaving only Calais by 1453. New borders can plant the seeds of the next conflict.
3 · Growth of royal power and the state
To fight a war a ruler needs money and men, so wars push kings to build stronger states. They introduce new taxation, expand their administration, and move towards paid standing forces. Late in the Hundred Years' War, France created a permanent royal army funded by regular taxes — a lasting leap in royal power.
Rulers change, borders move, and the crown grows stronger — power reshaped three ways.
Why war strengthens kings: This is the subtle one students miss. War is expensive, so a king who wants to keep fighting must squeeze more tax, hire more officials and keep a standing army.
Over time these war-time tools become permanent — and the medieval state grows more centralised as a result.
Winner's effects
- Gains territory and prestige
- Dynasty and ruler secured or promoted
- Balance of power tilts in its favour
- Can fund a stronger state from spoils
Loser's effects
- Loses land and status
- Ruler may be deposed or dynasty ended
- Weakened against rivals
- Debt and unrest from the cost of defeat
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The human and lasting categories
The last three drawers move away from kings and maps to the people who lived through the war — and to whether the peace actually held.
Strong essays balance the "power" effects above with these more human consequences.
Social and economic impact
Wars drain money and disrupt everyday life. Heavy taxation to pay for armies could spark revolts, as it did in the English Peasants' Revolt of 1381. Trade routes were cut, farmland was trampled or abandoned, and food production fell. Wars could also reshape society — after the huge losses of the mid-14th century, surviving peasants could demand better wages, weakening the old feudal order.
The human cost
This is the effect on ordinary lives. Soldiers and civilians died in battle and in the raids that armies used to devastate enemy land. People were displaced from burned villages, famine followed when crops were destroyed, and whole communities could be wiped out. A student who ignores the human cost gives a bloodless, incomplete picture of a war.
Peace settlements and treaties
Most wars end in a treaty, and its terms are a major effect in themselves. A settlement might transfer land, arrange a royal marriage or demand payments. But treaties often failed to bring lasting peace — the Treaty of Brétigny (1360) paused the Hundred Years' War, yet fighting resumed within a decade because neither side truly accepted it.
Chevauchée — devastation as a weapon: In the Hundred Years' War, English armies used the chevauchée to wreck the French countryside.
It shows how the human cost and the economic cost of a war were often one and the same — destroyed farms meant both famine and lost royal revenue.
Judging a peace settlement: When a question touches on a treaty, always judge its success or failure. Ask: did it actually end the conflict, or just pause it?
Examiners love the point that many medieval treaties failed — they redrew borders on paper but left grievances that reignited war.