Reassessing a fragment of the southern front: Potsangbam and Nachou as operationally decisive engagements in the battle of Imphal, 1944

This paper examines the engagements at Kha-Potsangbam and Nachou as interconnected actions within a defined sector of the southern front of the Imphal Plain during the Japanese offensive of 1944 (Operation U-Go or Operation C). Fought along the Tiddim Road, these engagements are analysed through a detailed operational reconstruction that traces the sequence of attacks, troop movements, and their immediate effects on the southern approaches to Imphal. Drawing on primary and secondary literature, and civilian testimonies, the study focuses on operational military history while briefly acknowledging the impact of the fighting on the local population through references to displacement and food scarcity. An archaeological excavation at Potsangbam is noted, though it is not directly incorporated into the operational analysis. This study argues that the engagements at these two settlements constituted an operational fulcrum whose outcome played a major role in altering the tempo of operations and contributing to the failure of the Japanese 33rd Division—the principal striking force of the Fifteenth Army, upon whose success the wider execution of Operation U-Go depended—thereby shaping the trajectory of the campaign as a whole, and representing one of the most fully developed expressions of the distinctive mode of combat, village-and-paddy-field fighting, that characterised the southern sector of the Imphal battle.