His experiences as a naval officer assigned to the Combat Intelligence Unit, Pearl Harbor, during World War II. Assignment to Station HYPO, February, 1942; comments about Joseph Rochefort, Jasper Holmes, Edwin Layton, and Chester Nimitz; comments about the breaking of JN- 25; role of intelligence in the Battles of the Coral Sea and Midway; role of intelligence in the shooting down of Admiral Isoroku Yamamoto's plane; role of intelligence in U. S. submarine operations in the Pacific; his role in the organization of intelligence files and the distribution of intelligence information; formation of the Intelligence Center, Pacific Ocean Areas (ICPOA), September, 1942; his assignment to the Estimates Section of ICPOA; establishment of a photo-reconnaissance section within ICPOA; establishment of the Joint Intelligence Center, Pacific Ocean Areas (JICPOA); setting up the "Weekly Intelligence Bulletin"; JICPOA's role in the Pacific island campaigns; his role in preparing casualty estimates for the initial invasion of the Japanese home islands (OLYMPIC); postwar naval career.