Six Fronts of the First World War: How a Quarrel Over a Forested Valley in Pennsylvania Set the Globe on Fire from Quebec to Manila to Senegal
Central Europe, 1756–1763 • Prussia Against Austria, Russia, France, Sweden, Saxony
Frederick II of Prussia preempted a coalition forming against him by invading Saxony in August 1756. He spent the next seven years on the strategic defensive against Austria, Russia, France, and Sweden — a coalition with three times Prussia's manpower and ten times its revenue. Crushing victories at Rossbach and Leuthen (both 1757) were balanced by catastrophes at Kunersdorf (1759). Only the death of Empress Elizabeth of Russia in January 1762 — the "Miracle of the House of Brandenburg" — saved the kingdom.
1712–1786 • King of Prussia from 1740
A flute-playing philosopher-king and the era's most respected battlefield commander. Frederick fought 16 pitched battles, won 8, and twice contemplated suicide as the coalition closed in. His oblique-order tactics at Leuthen and his willingness to march at the speed his enemies thought impossible kept Prussia alive against odds his contemporaries judged hopeless.
Habsburg ruler determined to recover Silesia, lost to Frederick in the previous war. Architect of the Diplomatic Revolution. Her son Joseph II later remarked the war had cost Austria 100,000 lives "for nothing."
Daughter of Peter the Great. Hated Frederick personally; her armies came within reach of Berlin in 1760. Her sudden death in January 1762 reversed Russia's policy overnight.
British Secretary of State. Subsidised Frederick at £670,000/year, calling Prussia "the only ally we have left." Conducted the global war at Pitt's "system of subsidies."
Austria's most successful field commander. His cautious "Fabian" strategy at Hochkirch (1758) wounded Frederick more deeply than any defeat — without ever risking decisive battle.
The European war pinned French armies to the Rhine, allowing Britain to win her overseas wars in North America, the Caribbean, and India. Pitt's subsidies to Frederick were the single most cost-effective British investment of the century — "America was conquered in Germany," Pitt later said.
Ohio Country to Quebec, 1754–1763 • The War That Began Two Years Early
Two years before Europe ignited, a 22-year-old Virginia militia colonel named George Washington fired what Horace Walpole called "a shot in the wilderness that set the world ablaze." The North American theatre — called the French and Indian War in U.S. tradition — pitted Britain and her colonists and Iroquois allies against New France and her Algonquin allies. Britain's victories at Louisbourg, Quebec, and Montreal stripped France of an empire that had taken 150 years to build.
1727–1759 • Killed at the moment of victory
A consumptive, hot-tempered young general who scaled the Heights of Abraham above Quebec on the night of 12–13 September 1759 and defeated the Marquis de Montcalm in a battle that lasted only 15 minutes. Wolfe was killed in the action; Montcalm died the following day. The fall of Quebec ended French North America.
French commander in Canada. Aristocrat, scholar, gifted tactician. His victory at Carillon (1758) over four times his number was offset by the disaster at Quebec the following year.
Virginia militia colonel. Fired the first shots at Jumonville Glen, served at Braddock's defeat. The war taught him logistics, command, and a deep distrust of British regular officers.
Mingo Iroquois leader. Sided with Washington at Jumonville Glen and reportedly tomahawked the wounded Jumonville himself, igniting the conflict's diplomatic fuse.
British commander-in-chief. Captured Louisbourg, then Montreal. His later policy of withholding gifts from native allies provoked Pontiac's War in 1763.
The North American theatre was the war's strategic prize: Pitt called it "the great object." British naval supremacy at Quiberon Bay (1759) made every British colonial conquest sustainable. The war's debts birthed both the British Empire's apex and, twelve years later, the rebellion that would shrink it.
West Indies, 1759–1762 • Britain Strikes the Sweetest Pieces of Empire
The Caribbean theatre was the era's most economically consequential. Sugar islands generated multiples of the revenue of any North American colony. Britain captured Guadeloupe (1759), then Martinique (1762), then — in the war's most spectacular single operation — Spanish Havana (August 1762), seizing one-fifth of Spain's New World silver. Yellow fever killed more attackers than Spanish guns.
1706–1792 • Joint commanders of the Havana expedition
Pocock (the East Indies victor at Cuddalore) and Albemarle led 14,000 troops against the strongest Spanish fortress in the Americas. After a 67-day siege of Morro Castle ending 30 July 1762, Havana fell. Yellow fever halved the besieging army within weeks of the surrender.
Captured Martinique. Later a household name for the 1782 Battle of the Saintes; built his Caribbean reputation in this war.
Spanish governor of Cuba. Court-martialled and exiled after Havana's fall. Spanish honour required a scapegoat for the catastrophe.
Bourbon king who entered the war eight months before its end. Lost Manila and Havana, gained Louisiana from France — a net imperial loss masked as gain.
Vector of yellow fever; the deadliest single combatant in the Caribbean. Killed more British soldiers in 1762 than the Spanish, French, and Dutch combined.
Caribbean conquests were Britain's bargaining chips at Paris. Returning Guadeloupe and Havana let Britain keep Canada, the Ohio Country, Senegal, and Bengal — reshaping global empires. Spanish silver paid for French rearmament that would shape the next round, the American Revolution.
South India and Bengal, 1757–1763 • The East India Company Becomes a State
India was the indirect war — fought by the British and French East India Companies with sepoy armies and small European cores. Robert Clive's victory over Siraj-ud-Daulah at Plassey (June 1757) won Bengal and its 30-million-person revenue base. Sir Eyre Coote's defeat of Lally at Wandiwash (January 1760) ended French ambitions on the subcontinent. Pondicherry, the French capital, fell in January 1761. Britain's commercial company emerged from the war as a territorial sovereign.
1725–1774 • Twice Governor of Bengal
Stationed in Madras as a depressed clerk, he discovered military genius in the First Carnatic War. At Plassey on 23 June 1757 he beat the Nawab of Bengal's army of 50,000 with 3,000 men — mostly through Mir Jafar's pre-arranged betrayal. He returned to Britain rich beyond imagining; harassed by parliamentary inquiry, he committed suicide in 1774.
Last independent Nawab of Bengal. Captured Calcutta, lost everything at Plassey. Murdered shortly after the battle on Mir Jafar's order, aged 24.
Irish commander, victor of Wandiwash. Later defeated Hyder Ali in the Second Anglo-Mysore War. The most underrated British general of the eighteenth century.
French Irish-Jacobite commander. Tactically capable, politically isolated, financially starved. Executed in 1766 for the loss of Pondicherry; rehabilitated posthumously.
The Bengali general whose pre-arranged treachery delivered Plassey. Made Nawab as Clive's puppet; deposed by Clive when he proved insufficiently pliable; restored when his successor proved still less so.
Bengal's silver helped finance the Royal Navy's Atlantic operations. Pitt's continental subsidies, Caribbean expeditions, and Canadian campaigns all drew indirectly on the Company's new revenue. India's conquest was the Seven Years' War's most enduring imperial inheritance.
Manila, 1762–1763 • The Twenty-Month British Occupation Asia Forgot
Britain learned of war with Spain in March 1762 and dispatched an expedition from Madras under Admiral Cornish and Brigadier-General William Draper. Manila — the silver-rich Pacific entrepôt — fell in October 1762 after a fierce siege. The British administered Manila Bay area for nearly two years; the rest of the islands resisted under Lt. Governor Anda. Returned to Spain at the Treaty of Paris, the episode is a footnote in European history but seismic in Philippine memory.
1721–1787 • Captor of Manila
An Eton-educated soldier who had served in India. He led the assault on Manila with 1,800 European and 1,400 sepoy troops; the city's walls were breached on 5 October 1762. Returning to Britain a hero, he became famous for his bitter pamphlet feud with the anonymous Junius and was knighted in 1766.
Commanded the naval squadron that escorted the expedition. Captured the Manila galleon Santísima Trinidad off Cape Espíritu Santo — a prize worth more than £1 million.
Acting governor and archbishop of Manila. Surrendered the city; signed the Manila Ransom. Died in 1764, broken by the experience.
Audiencia justice who refused to recognise the surrender. Mounted resistance from Bacolor; later Governor-General of the Philippines (1770–76).
Many sepoys deserted to Anda or stayed in the islands after British withdrawal, settling in Cainta, Rizal — their descendants still live there.
The Manila expedition demonstrated the war's truly global reach: orders sent from London were executed in the Pacific by an India-based force. The captured Spanish silver helped subsidise British operations, while the loss eroded Spanish prestige and shaped the resistance traditions later celebrated in Philippine nationalism.
Senegal, 1758 • A Quaker's Memorandum and a Forgotten Conquest
In 1757, a Quaker merchant named Thomas Cumming convinced Pitt that France's West African slave-trading posts were a soft target. The expedition was small: a few hundred marines, Royal Navy frigates. They took Saint-Louis at the mouth of the Senegal River in May 1758 and Gorée Island off Dakar in December. The conquest gave Britain control of much of the gum arabic trade and significant slave-trade infrastructure — a footnote of the war that nonetheless reshaped Atlantic commerce.
d. 1774 • London merchant of West African experience
An odd protagonist for an imperial conquest: a Quaker abolitionist who believed taking the French slave forts would economically damage the trade rather than expand it. He laid out his plan in a memorial to Pitt in 1757; Pitt approved a small expedition. Cumming sailed with the squadron and signed the surrender of Saint-Louis as a civil commissioner.
Naval commander of the Saint-Louis expedition. His brisk reduction of the post on a shoestring vindicated Pitt's strategy of small, distributed expeditions.
Captured Gorée. Member of a Whig political family; later First Lord of the Admiralty during the American war.
The Wolof and métis traders of the Senegal River adjusted to British rule, then back to French. Local trading families — the signares — bridged regimes by marrying officers of every nationality.
The chartered British corporation that acquired the new posts. The captured slave-trade infrastructure passed wholesale into British use, a moral fact obscured at the time by economic enthusiasm.
The Senegal campaign was the smallest and cheapest of the six theatres but produced an outsized economic dividend. The model — small, swift, expert expeditions striking colonial weak points — was repeated wherever French trading posts existed worldwide. Africa's role in the war is often forgotten; its consequences shaped Atlantic commerce for two centuries.
| Theatre | Years | Key Battle | Casualties | British Outcome | Disposition at Paris |
|---|---|---|---|---|---|
| Europe | 1756–1763 | Leuthen (1757) | ~500,000 | Status quo ante | Restored |
| North America | 1754–1763 | Plains of Abraham (1759) | ~75,000 | Canada conquered | Kept |
| Caribbean | 1759–1762 | Havana (1762) | ~15,000 (mostly disease) | Major captures | Mostly returned |
| India | 1756–1763 | Plassey (1757), Wandiwash (1760) | ~50,000 | Bengal conquered | Kept |
| Philippines | 1762–1764 | Manila (1762) | ~2,000 | Manila held 20 months | Returned |
| West Africa | 1758 | Saint-Louis (1758) | ~500 | Senegal conquered | Saint-Louis kept |
Winston Churchill called the Seven Years' War the "first world war" — battles raged in Europe, North America, the Caribbean, India, the Pacific, and West Africa simultaneously. Treaties on one continent were settled by victories on another.
Quiberon Bay (November 1759) destroyed France's Atlantic fleet. Without it, every French colonial garrison was isolated. British amphibious power — from Louisbourg to Manila — depended on a Royal Navy that had no peer.
William Pitt the Elder paid Frederick £670,000 per year to keep France pinned to the Rhine, freeing the navy and army for global conquests. The economic logic of the subsidy was unmatched in eighteenth-century strategy.
Yellow fever in the Caribbean, dysentery in India, smallpox among Native Americans — disease casualties dwarfed combat losses. Havana alone cost the British perhaps 7,000 dead from yellow fever versus 700 to Spanish guns.
British debt rose from £75 million in 1756 to £133 million in 1763. Servicing it required colonial taxation — the Stamp Act, the Townshend Duties — which lit the fuse of the American Revolution twelve years later.
Britain emerged with Canada, the Ohio Country, Florida, Senegal, and dominance in India. France lost most of its overseas empire; Spain gained Louisiana but lost Florida. Europe's borders barely changed; the world's were rewritten.
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