U Go offensive

U Go offensive. The U Go offensive was a major Japanese invasion of British India launched in March 1944 during the Second World War. The operation aimed to capture the key Allied bases at Imphal and Kohima in Manipur, thereby disrupting British supply lines and inspiring a revolt against colonial rule. Ultimately, the offensive resulted in a catastrophic defeat for the Imperial Japanese Army, marking the largest land defeat in Japan's military history up to that point and a decisive turning point in the Burma campaign.

Background

By early 1944, the strategic situation in the Southeast Asian theatre was at a critical juncture. Following earlier victories like the Fall of Singapore and the conquest of Burma, Japanese forces faced a resurgent British Fourteenth Army under General William Slim. The Allies were preparing for their own offensive, Operation Capital, aimed at recapturing northern Burma. Concurrently, the political wing of the Indian National Army, led by Subhas Chandra Bose, sought to incite an uprising within the British Indian Army. The Japanese high command, particularly the aggressive commander of the Japanese Fifteenth Army, Lieutenant General Renya Mutaguchi, believed a successful invasion of India could cripple Allied plans and potentially alter the course of the war in Asia.

Planning and objectives

The operational plan, codenamed U-Go, was conceived primarily by Mutaguchi. Its primary military objectives were the capture of the vital Allied logistical and administrative centers at Imphal and the hill station at Kohima, which lay on the strategically crucial Burma Road. By seizing these positions, the Japanese aimed to cut the supply lines to Allied forces in Burma and China, particularly those supporting General Stilwell's Northern Combat Area Command and the Republic of China Army. A secondary, more ambitious political objective was to use the invasion as a catalyst for a widespread rebellion in India against British rule, in coordination with the Indian National Army and Bose's Provisional Government of Free India.

Order of battle

The offensive was executed by the Japanese Fifteenth Army, comprising the 15th, 31st, and 33rd Divisions, alongside the Indian National Army's 1st Division. Facing them was the British Fourteenth Army, with its IV Corps under Lieutenant General Geoffrey Scoones responsible for the defense of Imphal and the surrounding areas. The garrison at Kohima was held by a mixed force from the 161st Indian Infantry Brigade and the Royal West Kent Regiment. Allied air support was provided by the RAF Third Tactical Air Force and the USAAF Tenth Air Force, which would prove decisive in resupplying besieged forces.

The offensive

The invasion began on 8 March 1944, with the 33rd Division crossing the Chindwin River to advance on Imphal, while the 31st Division struck towards Kohima. Initial Japanese advances were rapid, leading to the sieges of both Imphal and the Kohima. The fighting at Kohima, particularly around the Deputy Commissioner's bungalow and Ridge, was exceptionally fierce. Despite being surrounded, Allied forces were sustained by a massive airlift operation directed by Slim. The concurrent Operation Thursday, led by Orde Wingate's Chindits, disrupted Japanese rear areas. By late May, British reinforcements, including the 2nd Division and 5th Indian Division, broke the sieges and began a relentless counter-offensive that drove the exhausted and starving Japanese forces back into Burma in a disastrous retreat.

Aftermath

The failure of the offensive was a military disaster for Japan, with the Japanese Fifteenth Army suffering over 50,000 casualties, many from disease and starvation during the retreat. The defeat shattered the offensive capabilities of Japanese forces in Burma and paved the way for the successful Allied recapture of the country in 1945. For the Allies, the victory at Imphal and Kohima was a monumental morale boost and demonstrated the effectiveness of the British Fourteenth Army. The political aim of sparking an Indian rebellion failed completely, and the reputation of the Indian National Army was diminished. The battles are often considered among the most critical of the Burma campaign and are sometimes called the "Stalingrad of the East" for their decisive nature.

Category:Battles of World War II Category:Battles involving India Category:History of Myanmar Category:Military history of Japan