Final answer:
The Sepoy Rebellion of 1857-1858 in India was led by the native Indian soldiers called Sepoys. It was marked by brutality from both the Indians and the British.
Step-by-step explanation:
The mutiny referred to in the question is the Sepoy Rebellion of 1857-1858 in India. The rebellion was led by the Sepoys, native Indian soldiers who revolted against their British employers. The Sepoy Rebellion was marked by brutality from both sides, with massacres of British men, women, and children as well as revenge acts by the British involving the slaughter of unarmed Indians.