Bose along with A M Nair was instrumental in persuading the Japanese authorities to stand by the Indian nationalists and ultimately to support actively the Indian freedom struggle abroad. Bose convened a conference in Tokyo on March 28-30, 1942, which decided to establish the Indian Independence League. At the conference he moved a motion to raise an army for Indian liberation. He convened the second conference of the League at Bangkok on June 22, 1942. It was at this conference that a resolution was adopted to invite Subhas Chandra Bose to join the League and take its command as its president.
The Indian prisoners of war captured by the Japanese in theMalaya and Burma fronts were encouraged to join the Indian Independence League and become the soldiers of the Indian National Army (INA), the military wing of Bose's Indian National League. But his rise to actual power and glory was unfortunately terminated by an action of the Japanese military command, which expelled him and his general Mohan Singh from the INA leadership. But though he fell from grace, his organisational structure remained, and it was on the organisational spadework of Rashbehari Bose that Subhash Chandra Bose later built the Indian National Army (also called 'Azad Hind Fauj'). Before his death, the Japanese Government honoured him with the 'Second Order of the Merit of the Rising Sun'.