1914. He joined Ras Behari Bose, Mathura Singh, Kartar Singh Sarba, Bhai Parma Nand and Pingle. In 1915, on the request of Sarla Devi, wife of Bhai Hirda Ram, the Viceroy converted his death sentence into life imprisonment. In the same year, Nagchala Dacoity in Mandi state took place. In Mandi conspiracy case, Mandi revolutionary Sidhu Kharara was sentenced for seven years in 1917. Mandi Legislative Council was constituted in 1933. Swami Purna Nand of Mandi was elected as president of "Himalayan Hill states regional Council" (founded in 1945) & Pt. Padam Dev became its general secretary. The session of "Himalayan Hill states regional Council" was held at Mandi from March 8, 1946 to March 10, 1946. It was also attended by INA activists Dhillon, Sehgal and Shahnawaj. So finally, Mandi came into existence on April 15, 1948. Suraj Sen ruled over Mandi at time of Damdama Mahal of Mandi.
Before independence
The Chiefs of Mandi State are said to be the descendants of common ancestors of the Chandervanshi line of rajputs of Sen dynasty of Bengal who claim to be the descendants of Pandavas of Mahabharata times. According to the earlier accounts, Bahu Sen established an independent territory and was recognized as a Rana or local Chief. The Raja Ajber Sen, the nineteenth descendent from Bahu Sen, was considered as an able and benevolent ruler. He founded the present Mandi city around the ‘Bhootnath Temple’ in early 16th century (1500 AD-1534 AD) and shifted his capital to this place from Purani Mandi. The temple of Trilokinath was also constructed during his reign. He was succeeded by Chhattar Sen who built a fort in Kalar by name Lakargarh. The successive rulers of Mandi were Shyam Sen, Gaur Sen, Sidh Sen, Shamsher Sen, Surma Sen, Ishwari Sen, Jalam Sen, Balbir Sen and Vijay Sen. Many public utility, services and facilities like schools, hospitals and post offices, etc., were started by
