Political history of Sri Aurobindo
Anushilan Samiti was founded as an attempt to organize Bengali youth through a program of physical fitness and spiritual training for a nationalist program. By 1902, Calcutta had three societies working under the umbrella of Anushilan Samity, a society earlier founded by a Calcutta barrister by the name of Pramatha Mitra. These included Mitra's own group, another led by a Bengali lady by the name of Sarala Devi, and a third one led by Aurobindo Ghosh. The Anushilan Samiti had Aurobindo and Deshabandhu Chittaranjan Das as the vice-presidents, Suren Tagore the treasurer. Jatindra Nath Banerjee (Niralamba Swami), Bagha Jatin, Bhupendra Nath Datta (Swami Vivekananda's brother), Barindra Ghosh were among other initial leaders.
By 1905, the work of Aurobindo and his brother Barin Ghosh allowed Anushilan Samity to spread through Bengal.
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.