Netaji Subhas Chandra Bose was one of the most dynamic revolutionary leaders of the Indian freedom struggle. Dissatisfied with Gandhi's non-violent methods during World War II, he founded the Forward Bloc in 1939 and later led the Indian National Army (Azad Hind Fauj) to launch an armed struggle against British rule from abroad.
Subhas Chandra Bose was unanimously elected President of the INC. He set up the National Planning Committee (headed by Jawaharlal Nehru) to prepare a blueprint for post-independence economic development through rapid industrialization.
Bose stood for re-election in 1939. Mahatma Gandhi supported Pattabhi Sitaramayya. Bose won by 1,580 votes to 1,377. Gandhi declared: "Pattabhi's defeat is my defeat."
Bose proposed giving a 6-month ultimatum to the British government to grant independence, failing which a mass struggle would be launched. Gandhi and the Working Committee opposed this. Unable to form an executive committee due to ideological differences, Bose resigned as Congress President in April 1939 (replaced by Dr. Rajendra Prasad).
After resigning from the INC Presidency, Netaji founded the Forward Bloc on 3 May 1939 as a left-wing radical faction within the Congress.
Bose made a thrilling escape from house arrest in Calcutta (January 1941), reached Germany, met Hitler, and traveled by submarine to Singapore in July 1943.
Imphal & Kohima Campaign (1944): The INA along with Japanese forces advanced into Indian territory, hoisting the Tricolour at Moirang in Manipur. Japan handed over Andaman & Nicobar Islands to Netaji, who renamed them Shaheed (Martyr) and Swaraj (Self-Rule) islands. However, bad monsoon, supply failure, and Japan's defeat forced the INA to retreat.
Red Fort Trials (1945–46): The British put three INA officers — Major General Shah Nawaz Khan, Colonel Gurbaksh Singh Dhillon, and Colonel Prem Sahgal — on trial at Red Fort, Delhi. Top Congress lawyers (Bhulabhai Desai, Jawaharlal Nehru, Sir Tej Bahadur Sapru) defended them. Public outcry was so intense that the Commander-in-Chief was forced to remit their sentences. The trials triggered the Royal Indian Navy (RIN) Revolt in 1946, convincing the British that Indian armed forces could no longer be trusted to maintain empire.