Captain Train was appointed as commanding officer of the battleship on February 3, 1940, and served in this capacity for one year. Then he became a chief of staff with
Battle Force under the command of Vice Admiral
William S. Pye. During the Japanese
Attack on Pearl Harbor, Train issued orders for the battleship not to sortie, in order to minimize the damage of the ship and avert the possibility of the sinking and blocking the Pearl Harbor channel. For his conduct during the attack, Train was awarded the
Navy Commendation Medal with
Combat "V" from the commander of the
Pacific Fleet, Admiral
Chester W. Nimitz. Train then spent almost three months as chief of staff with Admiral Nimitz' Pacific Fleet, before he was ordered to report to the Office of the Chief of Naval Operations, Admiral
Ernest King. His next assignment was capacity of
Director of the Office of Naval Intelligence, in which he replaced Rear Admiral
Theodore S. Wilkinson on July 20, 1942. Train was promoted to the rank of
rear admiral a month later. In September 1943, Train was transferred to the
Balboa, Panama, where he was appointed as commander of
15th Naval District,
Panama Sea Frontier and
Commander Southeast Pacific Force. In this capacity, he replaced Rear Admiral
Clifford E. Van Hook and was responsible for the securing of the
Panama Canal besides his other duties. For his service in this role, he was awarded the
Legion of Merit by the
army. Train was relieved of that command on June 10, 1944, and transferred back to the United States for further assignment. He was subsequently assigned to the Joint Post-War Committee within
Joint Chiefs of Staff in
Washington, D.C. This work include diplomatic assignments with the United States delegation at
Dumbarton Oaks Conference and to the
United Nations organization and its first meetings in
San Francisco. After the Japanese surrender, Train remained on active duty as senior naval member of the Joint Post-War Committee until his retirement. He was decorated by the army with an
oak leaf cluster to his Legion of Merit for the service with this committee. ==Postwar life==