Complex sentence: Japan gave nominal control of the islands to the Provisional Government of Free India on October 21,1943, and in the following March, the Indian National Army with the help of Japan crossed into India and advanced as far as Kohima in Nagaland.
Split into simpler sentences: Japan gave nominal control of the islands to the Provisional Government of Free India on October 21,1943. In March 1944, the Indian National Army with the help of Japan crossed into India and advanced as far as Kohima in Nagaland.