With Japan's entry into the war in December 1941, the 2/1st Battalion was ordered to return to Australia from the Middle East. White had been appointed as commanding officer. Whilst en route, the battalion was diverted to Ceylon to defend it from a possible Japanese invasion. The invasion never eventuated and the battalion finally arrived home in August 1942.
Later life
He was appointed the representative of the Australian military mission of the Allied Control Council for Germany, in Berlin in 1945. He was awarded the Legion of Merit by the United States for "invaluable assistance in the preparation of plans affecting Australian and combined forces in the South-west Pacific area from 1943 to 1945".