The Indian Rebellion of 1857 was a major uprising against British rule in India. It began in May 1857 when Indian soldiers, known as sepoys, revolted against the British East India Company's practices, including the use of animal fat in rifle cartridges, which offended both Hindu and Muslim soldiers. The rebellion spread quickly, with various regions and groups joining the fight for independence. The uprising was marked by significant battles and sieges, including the Siege of Delhi and the Battle of Kanpur. Although the rebellion was ultimately suppressed by the British by 1858, it led to significant changes in British policy, including the dissolution of the East India Company and the establishment of direct British rule over India.