Azad Hind Fauj or Indian National Army was formed by Ras Bihari Bose and then the army was reformed by Netaji Subhash Chandra Bose. Azad Hind Fauj was formed in October 1943 and was supported.  Azad Hind Fauj was a part of the political movement that was shaping up outside India against the British Rule.

The Indian nationalist’s people who were living in the southern part of Asia, they formed the Singapore Indian Association. There Japan showed its keen interest in the Indian freedom movement, then Ras Bihari Bose merged all these associations into a single independence league.

A conference was conducted in Singapore in which Mohan Singh attended as a representative of the Indian National Army. The freedom movement leaders wanted to Indian National Army to take responsibility for the freedom of war prisoners. Japan was said as the financial supporter of the Azad Hind Fauj.

Netaji Subhash Chandra Bose revived the Azad Hind Fauj his name was first suggested by the Mohan Singh. From the support of Army members Netaji was invited to take the command of Azad Hind Fauj.  There were many successful operations conducted by Azad Hind Fauj, The Attacks on British, Burma Campaign, Andaman Nicobar Flag hoisting, etc.