Brigade advanced, by outflanking the Anglo-American positions. However, INA's most serious, and ultimately fatal, limitations were the reliance on Japanese logistics and supplies and the total air-dominance of the allies, which, along with a supply line deluged by torrential rain, frustrated the INA's and the Japanese bid to take Imphal. With the siege of Imphal failing, the Japanese began to shift priority for resource allocation from South Asia to the Pacific, where they were fighting United States troops advancing from island to island against Japanese holdings there. When it had become clear that Bose's plans to advance to Delhi from the borders of Burma would never materialise due to the defeat of the INA at Imphal and the halt of Japanese armies by British aerial and later naval superiority in the region, Japanese support for Azad Hind declined. See also List of World War II puppet states List of Indian independence activists Subhas Chandra Bose Indian National Army Azad Hind Bank Azad Hind stamps Azad Hind Radio Decorations of Azad Hind Free India Centre Indian Legion Battaglione Azad Hindoustan Hindu–German Conspiracy References External links Netaji Subhas Bose Lecture notes on Bose States and territories established in 1943 States and territories disestablished in 1945 Indian independence movement Indian National Army Subhas Chandra Bose Military history of India during World War II Provisional governments Japanese occupation of Singapore Axis powers Client states of the Empire of Japan Collaboration with the Axis Powers