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.
Anushilan Samiti
A large portion of the Anushilan movement was attracted to left-wing politics during the 1930s, and those who did not join left-wing parties identified with Congress and the Congress Socialist Party. During the mass detentions of the 1930s surrounding the civil-disobedience movement, many members were won over to the Congress. Jugantar was formally dissolved in 1938; many former members continued to act together under Surendra Mohan Ghose, who was a liaison between other Congress politicians and Aurobindo Ghose in Pondicherry. During the late 1930s, Marxist-leaning members of the Anushilan in the CSP announced the formation of the Revolutionary Socialist Party.