In 1891, he was born in Uiryeong, Gyeongsang-do, Joseon, as the son of Jae rok Lee. In 1907, he entered the night class at the Department of Law at Bosung College, and graduated from Boseong Law College in 1910. In August 1910, he fled to Vladivostok and joined into the anti-Japanese independence movement under the guidance of Shin Chae-ho and his hometown leader, Ahn Hee-je. From 1930, he became the captain of a regular ferry to and from London and India. When the Korean Liberation Army was established in September 1940, the Provisional Government of the Republic of Korea made a special appointment to him as a military commissioner. During World War II, it was known in Korea that he was surviving around May 1948 after giving up his return and taking office as an adviser to an Indian merchant ship company.
Political activity
He returned to Korea in 1948. On December 19, 1949, he was invited to the Supreme Council of the Korean Youth. After that, he served as the head of the Korea Youth Team and advisory committee of the Ministry of Transportation, in 1949 he served as the second Minister of Home Affairs. On March 21, 1949 he became the second Minister of Defense a position he held until 5th of May, 1951. Syngman Rhee preferred a person who speaks English well and Shin was said to be fluent in English while studying in London. Upon returning, he is given the title Admiral. At the time, he served as the captain of a British merchant ship, advisor and director of an Indian merchant ship, but received military training in China and was adjutant to the Chinese Navy Admiral Sal Jinbing, the Korean Provisional Government's Korean Liberation Army Being a member of the military was recognized for his career, he was given the rank of lieutenant general of the Navy, and he was called Admiral Holy Mother. On July 17, 1949, while as Minister of National Defense, he said, "The military is waiting for orders from the President, and with orders, it can completely take over Pyongyang or Wonsan within a day." When the remarks became a problem, he explained that his remarks were misunderstood, but in early September of that year, he insisted, "I just wait for the time to come and I'm ready to push." As Lee Beom-seok resigned from his post as Prime Minister, Shin Sung was inaugurated as acting Prime Minister on April 21, 1950, and worked until November 22.
Korean War
The Korean War broke out and in the beginning of the war, at the State Council meeting held at 4:00AM on June 27, 1950, Shin Sung-mo who was Minister of Defense said that he had no knowledge of the situation. He was a member of the Provisional Government Military Committee, but unlike Lee Beom-seok, Ji Cheong-cheon, Kim Hong-il and others, he had no experience in direct combat with the army as he was engaged in maritime vessel-related work, communication-related, and interpretation-related work before the repatriation. As a member of the State Council of the Republic of Korea, he showed a completely different attitude from his position to take care of the safety of the people. At the time of the Korean War, he served as Chairman of the Joint Chiefs of Staff. Regarding the massacre of the Geochang massacre in 1951, he was criticized by the National Assembly that it was rationalizing the case with Kim Jong-won, who was then martial arts commander. It was found that some of the gold was used as political funds for Syngman Rhee. At this time, Shin Sung-mo resigned as Minister of National Defense while trying to avoid it. In 1951, he worked as the fifth chief executive officer of Japan. At this time, Chough Pyung-ok who was the Minister of Home Affairs and the Prime Minister's office disagreed over his appointment as the Japanese public official, and the Democratic National Party's top member, Yun Posun, also objected by mentioning his morality over the National Defense Force and Geochang massacre, but President Syngman Rhee kneels on their backlash and mocked Shin Sung-mo Japan Corporation jobs were passed.
After the ceasefire
On November 28, 1956, he served as the Dean of the Maritime University and was sick and died of cerebral hemorrhage at Uiryeong on May 29, 1960. After being buried in Seonyeong, Yongdeok-myeon, Uiryeong-gun, South Gyeongsang Province, it was later transferred to the Daejeon National Cemetery.
