Operation Vengeance: The assassination of Yamamoto

Posted: Mon Apr 13, 2009 12:17 am

In a postscript to the Battle of Midway, Admiral Yamamoto lost his life as a result of a decrypted message. Codebreakers learned that the admiral was scheduled to inspect a naval base on Bougainville in the Solomon Islands on April 18, 1943.

That morning, eighteen P–38 fighters left their base at Guadalcanal at the other end of the Solomon chain and arrived at Bougainville just as Yamamoto's plane was making its approach. The admiral was killed in the attack, depriving Japan of its most experienced and accomplished admiral and sapping Japanese morale. To maintain the fiction that the fighters had arrived by chance, the air force flew other patrols in the area, both before and after the attack. The Japanese did not change JN–25, and for the remainder of the war, U.S. intelligence intercepted and read thousands of Japanese messages.

http://en.wikipedia.org/wiki/Operation_Vengeance
http://www.espionageinfo.com/Vo-Z/World-War-II-United-States-Breaking-of-Japanese-Naval-Codes.html

Posted: Tue Apr 17, 2012 8:51 pm

Japanese is not an expert as hiding messages neither was Germany. They all failed because mainly because it was the technology behind the wheel.