Jatindra Nath Mukherjee was named ‘Bagha Jatin’ after he killed a tiger single-handed and without any arms. He joined as a stenographer in the government of Bengal. He came in contact with Aurobindo Ghosh. While working for the Yugantar as a main leader, he met Naren (Manabendra nath Roy). Several sources mention Jatin as being among the founders of the Anushilan Samiti in 1900, and as a pioneer in creating its branches in the districts. In 1908 with many revolutionaries implicated in the Alipore Conspiracy Case, Jatin took the charge of Yugantar activities. Jatin was arrested in the Hawra-Shibpur Conspiracy Case, and those who were arrested with him were given the common name ‘Jatin’s gang’. They were so ruthlessly tortured that some of them died and some went insane. Jatin, though acquitted in this case also for want of evidence, was dismissed from service. When in jail, Jatin and Naren made a long term programme to capture power through armed insurrection. They planned to unite different groups of patriots and with this intention Naren travelled extensively all over India as a Sanyasi and organised the revolutionaries in Bengal and elsewhere. The leaders of various groups gathered together and chose Jatin Mukherjee and Rashbehari Bose as leaders for Bengal and northern India respectively.
Attempts were made to organise the Indian revolutionaries outside India also. A Yugantar Ashram was formed at San Francisco and the Shikh community took active part in the struggle for freedom. With the outbreak of the First World War, the Indian revolutionaries of Europe gathered together in Berlin to form the Indian Independence Party and sought German assistance, to which the German government agreed. Jatin was the Commander-in-Chief of the entire revolutionary forces. Naren, leaving Jatin in hiding in Baleswar (Orissa), went to Batavia to negotiate a deal with German authorities there for the shipment of arms and financial help.
Police, however, learnt about the plan. With occasional skirmishes, the revolutionaries, running through jungles and marshy land in torrential rain, finally took up position in an improvised trench in undergrowth on a hillock at Chashakhand in Balasore. On 9 September 1915, after heavy exchange of fire, police found Jatin seriously wounded. In many ways, Bagha Jatin represented the best of the militant nationalist tradition in this country.
Reference:
http://www.liveindia.com/freedomfighters/baghajatin.html
http://archive.indianexpress.com/news/the-forgotten-bagha-jatin——–/215818/0
https://en.wikipedia.org/wiki/Bagha_Jatin
This Day in History 
The very beginning of this article is a wrong statement : it was Jatindra Nath MUKHERJEE who was named BAGHA JATIN. Being the founder of the Yugantar, how true is it that he worked for the Yugantar ? He was never implied in the Alipore Conspiracy Case. Naren Bhattacherya (M.N. Roy) was almost ten years younger than Jatin Mukherjee and remember Jatin Mukherjee as his first Guru.
The whole description is deficient in information, in conviction and almost ridiculous (“the hideout of Jatin in a paddy field”), turning him into a stooge (“Jatin was MADE the Commander-in-Chief”). Even a school-boy would have produced something better than this strange literature.
Dear Dr Prithwindra, appreciate your feedback. I had compiled the article based on various sources as mentioned in the reference section at the end of the article. I read further about Bagha jatin based on your comments and have corrected some of the details. I searched about founder of Yugantar, however could not find mention of Jatin’s name as a founder. He is mentioned as a main leader. I have updated the article with additional information. Kindly let me know if it needs any further updation to bring it closer to the reality.
I liked your ‘school-boy’ comment. The fact is I recently developed liking towards ‘history’ and hence I’m qualified under ‘school-boy’ category as far as history is concerned 🙂
Where did you get the spelling BaNgha Jatin ? Bagha in Bengali means “valorous like a tiger”.
Dear Dr Prithwindra, Thanks for the correction. I’ve updated the heading accordingly.
Dear Sathe-ji,
Nobody has a monopoly on Bagha Jatin, owing to the fact that he belongs to the Nation.
Much of his contribution had remained shrouded in hush-hush when, in 1955, I took up research on his life and times. Having corresponded with and interviewed men who had known him, having been brought up by his elder sister (our grand-aunt), having consulted archives in India, Europe and United States down the decades, I considered my task was over when, in 2010, H.E. Pranab Mukherjee launched my BAGHA JATIN published by National Book Trust; Pranab-ji considered this biography to be a short history of India’s armed struggle for freedom. I have also a much-appreciated PhD thesis in French on the subject.
My intention was far from hurting your noble effort to remind people about this unduly ignored hero.
Sincere congratulations for your spirit.
Regards.
Prithwindra Mukherjee
Dear Dr Prithwindra,
I’m honored to receive feedback from a person of your caliber. Thanks.