Siege of the British Residency in Kabul: British envoy Sir Louis Cavagnari and 72 men of the Guides are massacred by Afghan troops while defending the British Residency in Kabul. Their heroism and loyalty became famous and revered throughout the British Empire.

The siege of the British Residency in Kabul was a military engagement of the Second Anglo-Afghan War. The British resident, Sir Louis Cavagnari, and his escort were massacred after an 8-hour siege by mutinous Afghan troops inside their Residency in Kabul. This event triggered the second phase of the war, during which an Anglo-Indian army invaded Afghanistan and captured Kabul.

Sir Pierre Louis Napoleon Cavagnari was a British soldier and military administrator.

The Corps of Guides was a regiment of the British Indian Army made up of British and Indian officers, plus Indian cavalry sowars and infantry sepoys, primarily intended for service on the North West Frontier.

Kabul, is the capital and largest city of Afghanistan. Located in the eastern half of the country, it is also a municipality, forming part of the Kabul Province. The city is divided for administration into 22 municipal districts. Kabul's population was estimated in 2023 at about 4.95 million. In contemporary times, Kabul has served as Afghanistan's political, cultural and economical center. Rapid urbanization has made it the country's primate city and one of the largest cities in the world.

The British Empire comprised the dominions, colonies, protectorates, mandates, and other territories ruled or administered by the United Kingdom and its predecessor states. It began with the overseas possessions and trading posts established by England in the late 16th and early 17th centuries, and colonisation attempts by Scotland during the 17th century. At its height in the 19th and early 20th centuries, it became the largest empire in history and, for a century, was the foremost global power. By 1913, the British Empire held sway over 412 million people, 23 percent of the world population at the time, and by 1920, it covered 35.5 million km² (13.7 million sq mi), 24 per cent of the Earth's total land area. As a result, its constitutional, legal, linguistic, and cultural legacy is widespread. At the peak of its power, it was described as "the empire on which the sun never sets", as the sun was always shining on at least one of its territories.