Anushilan Samiti
Anushilan Samiti (Ōnūshīlōn sōmītī, "lit": body-building society) was a Bengali Indian organisation that existed in the first quarter of the twentieth century, and propounded 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, if somewhat independent, arms in East and West Bengal identified as Dhaka Anushilan Samiti centred in Dhaka (modern day Bangladesh), and the Jugantar group (centred at Calcutta) respectively.
Robert Nathan (intelligence officer)
Nathan was educated at Peterhouse, Cambridge, before joining the Indian Civil Service in 1888. He was appointed secretary of the Indian Universities Commission in 1902, and Private Secretary to the Viceroy, Lord Curzon, in 1905. In 1907 Nathan was made Chief Secretary to the Government of Eastern Bengal and Assam, and Commissioner of Dhaka Police. In 1908, Nathan, then the Police Commissioner of Dhaka, was responsible along with the district collector H.L. Salkeld for uncovering the revolutionary organisation of the "Anushilan Samiti", and for instituting the measures to suppress the organisation.