The revolt began at Meerut in May 1857, spread to Delhi, Kanpur, Lucknow and much of the North-Western Provinces and Awadh, and combined a mutiny of the Bengal Army with rural and princely rebellion. Both sides killed civilians: the National Army Museum records the killing of about 120 British women and children at Kanpur after a surrender, an act that shaped the character of the British response. The reprisals that Indians called the Devil's Wind included summary hangings along the line of march, the execution of prisoners by being blown from guns, the burning of villages, and the expulsion and partial demolition of Delhi after its recapture in September 1857. The revolt was suppressed by mid-1858, Rani Lakshmi Bai was killed in June 1858, and the East India Company was abolished in favour of Crown rule. Even the name of the events is contested: mutiny in older British usage, first war of independence in Indian nationalist usage.
Sepoys of the Bengal Army, princely states and rural populations rose against East India Company rule; British forces suppressed the revolt with mass executions and the punitive clearance of Delhi
The first all-India census, in 1872, counted about 30.8 million in the North-Western Provinces and 11.2 million in Oudh. Back-projected to 1857 the rebellion's core territory held on the order of 40 million, out of a British Indian population approaching 200 million. All pre-1872 Indian population figures are reconstructions from revenue settlements.
The lower figure is the conventional estimate, referred to in the Dawn report, of about 100,000 Indian soldiers killed in the fighting and the reprisals. The upper figure covers wider estimates that include civilians killed in punitive columns and executions, and the famine and epidemic mortality that followed the destruction of agriculture in the affected districts. Amaresh Misra's much larger claim of around ten million deaths over the following decade is an outlier that Saul David and others have rejected as an overestimate, and it is not used here. British military and civilian deaths, which are recorded with reasonable accuracy, numbered in the low thousands.
The National Army Museum and Britannica document the killing of British civilians at Kanpur, the summary hanging and execution of prisoners by being blown from guns during the British reprisals, the burning of villages and the demolition of quarters of Delhi including buildings around the Red Fort and the conversion of mosques to other uses after 1857.
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