History of the Anushilan Samiti
Around 1902, Aurobindo Ghosh arranged for Bannerjee to return to Calcutta to begin organisational work, where he began a gymnasium and a youth society. It was at this time that Bannerjee came in touch with Vibhuti Bhushan Bhattacharya, Sarala Devi Ghoshal and Pramathanath Mitra. In Calcutta, a few clubs and societies were still active at the time. Most notable was a gymnasium in Ballygunge Circular Road run by Sarala Devi herself, a second was an organisation named "Anushilan Samiti" founded by Satish Chandra Basu with the patronage of Pramathanath Mitra. A third one was a youth club called "Attōnnōti Samiti" (Self-improvement society) in central Calcutta.
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.