Anushilan Samiti was an Indian fitness club, which was actually used as an underground society for anti-British revolutionaries. In the first quarter of the 20th century it supported revolutionary violence as the means for ending British rule in India. The organisation arose from a conglomeration of local youth groups and gyms (akhara) in Bengal in 1902. It had two prominent, somewhat independent, arms in East and West Bengal, Dhaka Anushilan Samiti, and the Jugantar group.

The British Raj was the rule of the British Crown on the Indian subcontinent; it is also called Crown rule in India, or Direct rule in India, and lasted from 1858 to 1947. The region under British control was commonly called India in contemporaneous usage and included areas directly administered by the United Kingdom, which were collectively called British India, and areas ruled by indigenous rulers, but under British paramountcy, called the princely states. The region was sometimes called the Indian Empire, though not officially.