was an Imperial Japanese naval commander during the Pacific War and the author of the IJN manual on torpedo attack techniques, notable for his skill in torpedo warfare and night fighting. Hara was the only IJN destroyer captain at the start of World War II to survive the entire war and his memoirs serve as an important source for historians.
Early life
Hara was born on October 16, 1900, in a suburb of Takamatsu City on the island of Shikoku. A native of Kagawa Prefecture and of samurai descent, Hara graduated with the 49th class from the Imperial Japanese Naval Academy at Etajima in 1921. In 1932 Hara was assigned as a surface warfare instructor and wrote a torpedo attack manual that was accepted as official doctrine. He began the war as the captain of destroyer .
Military career
Hara commanded a Japanese destroyer or destroyer division in many significant Pacific sea battles. As captain of the Amatsukaze Commander Hara participated in the Battle of the Java Sea, the sinking of the submarine , and the occupation of Christmas Island. He wrote in his memoirs of having sunk another submarine in a night action after detecting it when he saw a sailor topside on the vessel light a cigarette an estimated away. Under his command, Amatsukaze also took part in the Battle of Midway in June 1942 and the Battle of the Eastern Solomons in August 1942. On 13 November 1942 Hara’s Amatsukaze sank the during the Naval Battle of Guadalcanal but was severely damaged in turn after Hara left his searchlights on too long and drew intense fire from the light cruiser .
After Amatsukaze returned to Japan for repairs Hara was promoted to captain and given the command of Destroyer Division 27, flying his flag aboard . While this was technically a four-ship formation the demands on the Imperial navy were such that Hara's ships rarely operated together. While serving aboard Shigure, Hara was involved in several fierce naval engagements during the latter part of the Solomon Islands Campaign. While on a re-supply mission through Blackett Straight on 2 August 1943, Hara noticed a fireball exploding near leading destroyer Amagiri and ordered Shigure's crew to shoot at the burning wreckage of Lt. John F. Kennedy's Motor Torpedo Boat PT-109. During the Battle of Vella Gulf on 6–7 August Shigure was the only one of four Japanese destroyers to escape, though she was later found to have been hit by a torpedo that failed to explode.
Although undamaged in the Bombing of Rabaul (November 1943), Shigure was ordered to back to Sasebo for a long overdue refit. Hara was relieved of his command and reassigned as senior torpedo instructor at the Naval Torpedo School at Oppama near Yokosuka to teach students in the Imperial Japanese Navy's belated Motor Torpedo Boat program. Hara was quickly frustrated with the lack of effective equipment as well as the lack of leadership in the navy and army. He hastily wrote a letter intended for Emperor Hirohito urging him to fire the heads of the army and navy and seek peace as the war was lost and hand delivered it to Hirohito's younger brother Nobuhito, Prince Takamatsu at the Navy Ministry. Despite the potentially grave consequences of this action Hara did not hear anything further on the matter.
Hara's last sortie was as captain of the light cruiser as flagship of the destroyer screen accompanying on her fateful last mission as part of Operation Ten-Go. He ended the war at Kawatana training Japanese sailors to operate Shinyo suicide boats, where he witnessed firsthand the effects of the second atomic bombing.