On July 5, 1917, Herbert O. Yardley was assigned to head the device. Congress declared war on Germany in World War I. A code and cipher decryption device was recognized as the Cable and Telegraph Section which was also regarded as the Cipher Bureau. Army cryptographic segment of armed forces intelligence, regarded as MI-8, in 1919, the U.S. It absorbed the Navy's cryptanalysis features in July 1918.