When the major powers sent troops to the Korean peninsula in June of 1950, it supposedly marked the start of one of the last century's bloodiest conflicts. In volume 1, Allan Millett, however, reveals that the Korean War actually began with partisan clashes two years earlier and had roots in the political history of Korea under Japanese rule, 1910-1945. In volume 2, he shifts his focus to the twelve-month period from North Korea's invasion of South Korea on June 25, 1950, through the end of June 1951 -- the most active phase of the internationalized "Korean War. "