Population Population of Korea in 1950: 30 million Population of North Korea in 1950: 9 million Population of South Korea in 1950: 21 million9 Geography Length of Korea: almost 600 miles Width of Korea: 200 miles at its widest, 90 miles at its narrowest Total land area of Korea: 85,000 square miles Total coastline of Korea: 5,600 miles11 Political Imprisonment Political prisoners in South Korea by 1947: 22,000 (twice as many as under the Japanese occupation)8 Estimated number of leftist political prisoners executed by South Korean police and military in the "Summer of Terror" of 1950: at least 100,000 (historians consider this a "very conservative" estimate)10 War Involvement Estimated strength of the North Korean army in 1950: 135,000 men Estimated strength of the South Korean army in 1950: 95,000 men12 Number of non-American troops from other UN member states sent to aid South Korea: about 40,000 Number of British Commonwealth troops sent to aid South Korea: about 20,000 Number of American troops sent to aid South Korea: 5,720,00014 5百72万美国军人被送到南韩的出处： 14 Richard Whelan, Drawing the Line: The Korean War, 1950-1953 (Boston: Little, Brown and Company, 1990), 153.
