After his training, Rane was posted to the 28th Field Company, an engineering unit of the 26th Infantry Division which, at the time, was fighting the Japanese in Burma. As his division retreated from the Japanese after the failed Arakan Campaign, he, along with his two sections, was hand-picked by his company commander to stay back behind at Buthidaung to destroy key assets and then be evacuated by the Royal Indian Navy. Though the objective was soon achieved, the expected pickup did not happen. This forced Rane and his men to cross a river that was patrolled by the Japanese to reach their lines. Rane, along with his two sections, expertly evaded the Japanese troops, and joined the 26th Infantry Division at Bahri. For his actions, he was promoted to "havaldar" (sergeant).