Subhas Chandra Bose was unanimously elected the President of the Indian National Congress in 1938. He was welcome by all sections of the Congressmen, both the left wingers and the conservatives. But in course of time when the possibility of a World War became certain, Subhas Chandra planned for a mass upsurge under the Congress banner.
This was to put pressure upon the British government to leave the country. However subhas's call for an immediate struggle against the British was not supported either by the Congress leftwingers or the conservatives.
It was in this context that Subhas Chandra won by contest as the President of the Tripuri Congress. Subhas Chandra became the President by defeating Pattavi Sitaramayya who was Gandhiji's nominee. Subhas Chandra Bose left 'the country in desire from his ancestral home at Elgin Road, Kolkata on the midnight of 16-17 January 1941.
'Rashbehari Bose, one of the top organizers of the Indian revolutionaries, had reached Japan as early as 1915. He organised in Bangkok a conference (1942) of the Indian émigrés in South-East Asia. The Conference took two momentous decisions e.g. (a) formation of the Indian Independence League under the National Army.
Accordingly, the two organizations came into existence In fact; the Indian Presidentship of Rashbehari Bose and (b) formation of the Indian National Army or Azad Hind Fauz came to be established at Singapore (1942) under the command of Captain Mohon Singh with the sole object of liberating India from British subjection.
The three ideals of the INA were defined as: Unity, Self-confidence and Self-sacrifice. However", when the activities of the INA were much hampered due to some internal troubles, Rashbehari Bose invited Subhas Chandra to come over to Japan (1943) where he was given a warm reception by Tojo, the then Prime Minister of Japan.
Rashbehari Bose very gladly handed over the charge of the Indian Independence League to Subhas Chandra. Subhas Chandra also took over the supreme command of the INA appearing in person at Singapore (1943).