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.
Emperor vs Aurobindo Ghosh and others
The hearings against the accused had continued through May with intermittent recesses. However, despite a considerable body of evidence against most of the accused, very little evidence existed against Aurobindo himself. The structure of "Anushilan samiti" prevented the higher echelons of the organisation from becoming familiar to the junior ranks, and Aurobindo's involvement in the organisation and its activities were hard to pinpoint, except for a few letters and correspondences confiscated at Barin's Manicktolla garden house. These included letters Bain had written in 1907, initialled "A.G." proclaiming the time to distributing "sweets" across India, a euphemism for bombs of which the technology Hem Chandra had learnt in Paris. On the other hand, much of the aim of the prosecution was to gain conviction against Aurobindo, who was seen as the most dangerous individual driving the "Samiti" against the Raj. Unable to identify stronger material evidence, the prosecution began an effort to obtain witnesses who may be able to implicate Aurobindo. Their target became a young Anushilanite by the name of Naren Goswami. Goswami belonged to the family of a landowner in Bengal, of a wealthy background and social standing. He had been arrested at Maniktala with Barin and others on the initial raid. On 22 June, Prosecutor Norton announced to the court that Narendranath Goswami had turned "King's witness", or prosecution witness, in return for a pardon. By the middle of August, Birley had heard evidence against the accused. He twice rejected the defence's requests to cross-examine Goswami, using discretionary powers granted to him by the government of Bengal. On 19, 31 August prisoners were committed to stand trial at Alipore Sessions Court for waging war against the King. On the evidence against Aurobindo, Birley concluded that letters and correspondences from members of the group- particularly one letter from Barin where he had referred to "distributing sweets" across India- indicated prima facie involvement on Aurobindo's part.