The worst example was when some 200+ wives and children of British garrison troops ( who were out pursuing the rebels) were herded into either a school or church, ( I forget which) and then HACKED to death.
This was part of the Massacre of Cawnpore. Here's a good link:
When news of the slaughter at the Bibi-Ghar reached Britain, it sent a shiver of horror through the nation. In Victorian Britain women and children had achieved an elevated status and it was a widely held belief that they had a right to special protection. It was during the reign of Victoria that the idea of 'women and children first' in a shipwreck became the norm and parliamentary legislation had ensured that women and children were protected from the worst abuses of the factory system. The seeming treachery of Nana Sahib at the massacre ghat was nought when measured against the unspeakable atrocities of the Bibi-Ghar. Vengeance was required and even more stern-faced than the Old Testament judges of the Bible, the British wanted more than just an eye for an eye and a tooth for a tooth. When the British later pushed up the valley of the Ganges and Cawnpore once more fell into their hands, they took their sepoy prisoners to the Bibi-Ghar and forced them to lick the blood-encrusted floors clean. Then they were taken out and hanged. Regiments newly arrived from Britain were routed through Cawnpore and shown round the site of the massacre. If it was intended to stiffen the troops resolve and harden their hearts against the mutineers it was probably unnecessary. Their hearts were hard enough already.