How did the 1944 Battle of Kohima help halt the Japanese advance into India during World War II?

The 1944 Battle of Kohima was a pivotal engagement that marked the farthest point of the Japanese advance into British India during World War II.1

The Japanese objective was to cross the Chindwin River to occupy the plain of Imphal and establish a defensive line in eastern Assam. While Japanese forces successfully surrounded Kohima, the British and Indian forces—under the command of William Slim—implemented a new defensive strategy. By utilizing air-supplied defensive positions and reinforcing the area with Indian divisions transferred from the secure Arakan front, the Allies were able to withstand multiple Japanese thrusts.2

This defense, combined with Allied superiority in tanks and aircraft, allowed the 14th Army to contain the Japanese forces and eventually launch a counter-offensive. By June 22, 1944, the Allied forces had successfully averted the threat to Assam and seized the initiative, effectively halting the Japanese invasion and paving the way for their own advance into Burma.2