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
Anushilan's campaign continued. In 1911 Dhaka Anushilan shot dead Sub-inspector Raj Kumar and Inspector Man Mohan Ghosh, two Bengali police officers investigating unrests linked to the group, in Mymensingh and Barisal. This was followed by the assassination of CID head constable Shrish Chandra Dey in Calcutta. In February 1911 Jugantar bombed a car in Calcutta, mistaking an Englishman for police officer Godfrey Denham. Rash Behari Bose (described as "the most dangerous revolutionary in India") extended the group's reach into north India, where he found work in the Indian Forest Institute in Dehra Dun. Bose forged links forming with radical nationalists in Punjab and the United Provinces, including those later connected to Har Dayal. During the 1912 transfer of the imperial capital to New Delhi, Viceroy Charles Hardinge's "howdah" was bombed; his "mahout" was killed, and Lady Hardinge was injured.