Sidney Mashbir

Who was Sidney Mashbir?

Sidney Forrester Mashbir was a senior officer in the United States Army who was primarily involved in military intelligence. Born in New York, he served in the Arizona Army National Guard during the Mexican-American Border War. Mashbir then held several posts in intelligence positions, taking credit for catching the first German spy in the United States, before departing for on a four-year assignment as a language officer to Japan in 1920. He resigned from the army in 1923 in an attempt to execute his own master plan devised to extract intelligence from Japan in event of a war. His plan failed as a result of the Great Kantō earthquake in September 1923 and he was left bankrupt; he consequently returned to the US as an engineering businessman.

In 1937, Mashbir returned to Japan in a second attempt to activate his plan on behalf of the Office of Naval Intelligence; it again failed, and Mashbir was dis-enrolled from the reserves in 1939. However, following the attack on Pearl Harbor, Mashbir was re-enrolled in January 1940 to lead the Allied Translator and Interpreter Section of Southwest Pacific Area, where he quickly rose to the rank of Colonel. He later served as the Executive Officer for the Army Adjutant General's Office before retiring in 1951.