Weak codes were the primary cause of that result, as the American delegation had the Japanese secret communications available.

In July, Slim ordered the Lushai Brigade to interfere with these Japanese communications.

They caused damage to Japanese communications, and they gathered intelligence.

During World War II he worked for the Australian government, helping to decrypt Japanese communications.

Rather, they used Jonas's forte-decoding ciphers-to intercept Japanese military communications.

American radio intelligence intercepted Japanese communications concerning this effort and the Marine command on Guadalcanal determined to try to intercept it.

Desch's department was immediately asked to research the problems of breaking Japanese communications.

He spent the years 1944-1947 in Washington, D.C., analyzing intercepted Japanese communications.

Japanese communications giving Yamamoto's flight itinerary were decrypted by United States Navy cryptographers.

When Japan entered the Second World War, the unit's mandate expanded to include the interception of Japanese communications.