The Zero Hour (World War II)

The Zero Hour (ゼロ・アワー^?, Zero awā) was the first of over a dozen live radio programs broadcast by Japan during the Pacific War. To reach a large geographical area these transmissions included shortwave radio frequencies in the 31 m band. The program featured Allied prisoners of war (POW) reading current news and playing prerecorded music, and sending messages from POWs to their families back home and to Allied soldiers and sailors serving in the Pacific theater. These messages were interlaced with demoralizing commentary and appeals to surrender or sabotage the Allied war effort. The Zero Hour also featured the female announcer dubbed Tokyo Rose.

The Zero Hour was the brainchild of Major Shigetsugu Tsuneishi, who joined the Japanese Imperial Army's 8th Section G-2 (Psychological Warfare) unit as the Army representative to the Information Liaison Confidential Committee, which oversaw the coordination of the nationalized news agencies, in November 1941. His first effort was a propagandistic photographic magazine called Front, based on the format of the American magazine Life.

Major Tsuneishi established an office at Radio Tokyo (NHK) and issued orders to the NHK Overseas Bureau's American, European, Asian, Editorial and Administration Divisions through Bureau Chief Yoshio Muto. Thereafter, all news broadcasts became official announcements of the Japanese Imperial Army General Headquarters (GHQ). The American Division radio announcers section was headed by Yuichi Hirakawa, a native Japanese with a degree in Dramatics from the University of Washington.

...
Wikipedia