Anushilan Samiti
By 1902, Calcutta had three secret societies working toward the violent overthrow of British rule in India. One was founded by Calcutta student Satish Chandra Basu with the patronage of Calcutta barrister Pramatha Mitra, another was led by Bengali woman Sarala Devi and the third was founded by Aurobindo Ghosh. Ghosh was one of the strongest proponents of militant Indian nationalism at the time. By 1905 the work of Aurobindo and his brother, Barin, enabled Anushilan Samity to spread throughout Bengal. Nationalist writings and publications by Aurobindo and Barin, including "Bande Mataram" and "Jugantar", had a widespread influence on Bengal youth. The 1905 partition of Bengal stimulated radical nationalist sentiments in Bengal's Bhadralok community, helping Anushilan acquire a support base of educated, politically-conscious and disaffected members of local youth societies. Its program emphasized physical training, training its recruits with daggers and "lathis" (bamboo staffs used as weapons). The Dhaka branch of Anushilan was led by Pulin Behari Das, and branches spread throughout East Bengal and Assam. More than 500 branches were opened in eastern Bengal and Assam, linked by "close and detailed organization" to Pulin's headquarters at Dhaka. It absorbed smaller groups in the province, soon overshadowing its parent organisation in Calcutta. Branches of Dhaka Anushilan emerged in Jessore, Khulna, Faridpur, Rajnagar, Rajendrapur, Mohanpur, Barvali and Bakarganj. Estimates of Dhaka Anushilan Samiti's reach indicate a membership of 15,000 to 20,000. Within two years, Dhaka Anushilan devolved its aims from the Swadeshi to that of political terrorism.
Anushilan Samiti
Anushilan established early links with foreign movements and Indian nationalists abroad. In 1907 Barin Ghosh sent Hem Chandra Kanungo (Hem Chandra Das) to Paris to learn bomb-making from Nicholas Safranski, a Russian revolutionary in exile. Paris was also home to Madam Cama, amongst the leading figures of the Paris Indian Society and India House in London. A bomb-making manual later found its way through V.D. Savarkar to the press at India House for publication. In 1908, young recruits Khudiram Bose and Prafulla Chaki were sent on a mission to Muzaffarpur to assassinate chief presidency magistrate D. H. Kingsford. They bombed a carriage they mistook for Kingsford's, killing two Englishwomen. In the aftermath of the bombing, Bose was arrested while attempting to flee and Chaki committed suicide. Police investigation of the killings revealed the organisation's quarters at Barin's country house in Manicktala (a suburb of Calcutta) and led to a number of arrests, including Aurobindo and Barin. The ensuing trial, held under tight security, led to a death sentence for Barin (later commuted to life imprisonment); others went underground. The case against Aurobindo Ghosh collapsed after the assassination of Naren Gosain, who had turned crown witness. Gosain was shot in Alipore jail by Satyendranath Basu and Kanailal Dutta, who were also being tried. Aurobindo retired from active politics after being acquitted. This was followed by a 1909 Dhaka conspiracy case, which brought 44 members of the Dhaka Anushilan to trial. Nandalal Bannerjee (the officer who arrested Kshudiram) was shot dead in 1908, followed by the assassinations of the prosecutor and informant for the Alipore case in 1909.