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.
History of the Anushilan Samiti
The first War Thesis of RSP in 1940 took the called for "turning imperialist war into civil war". But after the attack by Germany on the Soviet Union, the line of the party was clarified. RSP meant that the socialist Soviet Union had to be defended, but that the best way for Indian revolutionaries to do that was to overthrow the colonial rule in their own country. RSP was in sharp opposition to groups like Communist Party of India and the Royist RDP, who meant that antifascists had to support the Allied war effort.