The Japanese Imperial General Headquarters agreed to the study of a follow-up to the conquest of Burma with an invasion of Assam, India to be called Operation 21. The plan involved two divisions moving through the Hukawng valley in northern Burma, two taking Imphal, and a fifth capturing Chittagong. The plan was dropped, however, after opposition from Generals Renya Mutaguchi (18th Division), Yanagida Motozo (33rd Division) and Shojiro Iidas (55th Division).
