Roman conquest of Britain begins
Under Emperor Claudius, Roman forces invade Britain, gradually making much of the island a province of the empire.
Under Emperor Claudius, Roman forces invade Britain, gradually making much of the island a province of the empire.
On Emperor Hadrian's orders, the Romans begin building a defensive wall across northern Britain.
Vikings plunder the monastery on Lindisfarne in England, an event often taken as the start of the Viking Age.
Alfred the Great of Wessex defeats the Viking Great Army under Guthrum, securing the survival of Anglo-Saxon England.
William of Normandy defeats King Harold II, beginning the Norman conquest of England.
Robert the Bruce of Scotland defeats the army of Edward II of England, a key victory in the Wars of Scottish Independence.
A series of conflicts between England and France over the French throne ends with England losing nearly all its continental lands.
Henry Tudor defeats and kills Richard III, taking the throne as Henry VII and founding the Tudor dynasty, effectively ending the Wars of the Roses.
The Armada sent by Philip II to invade England is defeated by the English navy at the Battle of Gravelines and scattered during its retreat.
A series of conflicts between the Royalists of Charles I and the Parliamentarians, ending in victory for Parliament under Oliver Cromwell.
European powers fight over the succession to the Spanish throne after the death of Charles II; the war ends with the treaties of Utrecht and Rastatt.
Britain and France, with their Indigenous allies, fight for control of North America; France is defeated and loses most of its territory on the continent.
A global conflict among the European powers fought in Europe, North America and India; Britain gains colonial supremacy and Prussia confirms its great-power status.
The East India Company under Robert Clive defeats Siraj ud-Daulah, Nawab of Bengal, beginning British dominance in India.
The first clashes between colonial militia and British troops in Massachusetts begin the American Revolutionary War.
British General John Burgoyne surrenders to the Continental Army at Saratoga, a victory that helps bring France into an alliance with the Americans.
General Cornwallis surrenders to American and French forces at Yorktown, Virginia, effectively ending major fighting in the American Revolutionary War.
The British fleet under Admiral Nelson defeats the combined French and Spanish fleets, securing British naval supremacy; Nelson is killed in the battle.
The United States declares war on Britain; fighting in North America and at sea ends with the Treaty of Ghent and no change in borders.
British and Prussian forces defeat Napoleon Bonaparte, ending the Hundred Days and the Napoleonic Wars.
Britain defeats Konbaung Burma, which cedes Assam, Manipur, Arakan and Tenasserim under the Treaty of Yandabo.
Britain wars with Qing China after it cracks down on the opium trade; the defeat opens what China calls the 'century of humiliation'.
A series of armed conflicts between the colonial government and Māori iwi, chiefly over land and sovereignty, which led to large confiscations of Māori land.
An alliance of the Ottoman Empire, Britain, France and Sardinia defeats Russia, with fighting centred on the siege of Sevastopol in Crimea.
Britain and France fight Qing China, occupy Beijing and burn the Old Summer Palace in 1860, forcing further unequal treaties.
Sepoys mutiny at Meerut, sparking a widespread uprising against East India Company rule across northern and central India.
In the Anglo-Zulu War, a Zulu army defeated a British column at Isandlwana, one of the worst defeats of the British army by an indigenous force.
Boers of the Transvaal rose against British annexation and regained self-government after their victory at Majuba Hill.
Britain takes Mandalay and deposes King Thibaw, ending the Konbaung dynasty and annexing all of Burma to British India.
The British Empire fought the Boer republics of the Transvaal and Orange Free State; the war ended with the Treaty of Vereeniging, after tens of thousands of civilians died in concentration camps.
Austria-Hungary declares war on Serbia, drawing Europe's powers into a global war that lasts until the armistice of 11 November 1918.
The Australian and New Zealand Army Corps landed on the Gallipoli peninsula in the Allies' unsuccessful campaign against the Ottoman Empire; 25 April is now commemorated as Anzac Day.
Germany invades Poland, starting the deadliest conflict in human history, which ends with Japan's formal surrender on 2 September 1945.
The Royal Air Force repels a large-scale air campaign by the Luftwaffe, forcing Hitler to postpone his planned invasion of Britain.
British forces in Singapore surrender to Japan, the largest capitulation in British military history, beginning the Japanese occupation of Malaya.
Allied forces carry out the largest seaborne invasion in history on the Normandy coast, opening a Western Front to liberate Western Europe.
The Allies formally accept Nazi Germany's unconditional surrender, ending the Second World War in Europe.
After Nasser nationalises the Suez Canal, Israel, Britain and France attack Egypt but withdraw under US and Soviet pressure.
Argentina seizes the Falkland Islands; Britain dispatches a task force and retakes the islands after a 74-day conflict.
A US-led coalition invades Iraq and topples Saddam Hussein, beginning a long period of occupation and conflict.