The scale of British reprisals was almost unbelievable. British columns delayed reaching their objectives to take the time to annihilate the adult male populations of entire villages. Trees along the line of march were decorated with the hanged bodies of any men who couldn't conclusively prove that they had had no involvement with the insurrection.
The bloodletting went on for months, largely supported by people in Britain. This cartoon by Tenniel (from Punch magazine) reflects the popular mood.
No one knows how many people died in the reprisals, referred to as 'The Devil's Wind' by Indians. It was a wind that probably cut down 100,000 Indian soldiers but there are no records of civilian casualties, which probably exceeded this figure.
It was not until July 1859 that Lord Canning finally issued a proclamation officially declaring peace in India.
"War is at an end; Rebellion is put down; the Noise of Arms is no longer heard where the enemies of the State have persisted in their last Struggle; the Presence of large Forces in the Field has ceased to be necessary; Order is re-established and peaceful Pursuits have everywhere been resumed."