Battle of Kohima - Background

Background

The Japanese plan to invade India, codenamed U-Go, was originally intended as a spoiling attack against the British IV Corps at Imphal in Manipur, to disrupt the Allied offensive plans for that year. The commander of the Japanese Fifteenth Army, Lieutenant General Renya Mutaguchi, enlarged the plan to invade India itself and perhaps even overthrow the British Raj. The objections of the staffs of various headquarters were eventually overcome, and Mutaguchi's plan was approved by War Minister Hideki Tojo.

Part of the plan involved sending the Japanese 31st Division (which was composed of 58th Regiment, 124th Regiment, 138th Regiment and 31st Mountain Artillery Regiment) to capture Kohima and thus cut off Imphal. Mutaguchi wished to exploit the capture of Kohima by pushing the 31st Division on to Dimapur, the vital railhead and logistic base in the Brahmaputra River valley.

The 31st Division's commander, Lieutenant General Kotoku Sato, was unhappy with his role. He had not been involved in the planning of the offensive, and had grave misgivings about its chances. He had already told his staff that they might all starve to death. In common with many senior Japanese officers, Sato considered Mutaguchi a "blockhead". He and Mutaguchi had also been on opposite sides during the split between the Toseiha and Kodoha factions within the Japanese Army during the early 1930s, and Sato believed he had reason to distrust Mutaguchi's motives.