TheCodeBreakers
Naval School, had been financially interested in Arvid Damm's cipher
machines. Yves, who got his un-Swedish first name from his French
mother, became cryptologically interested and subjected them to every
possible cryptanalytic test The interest thus kindled
in cryptology remained with him throughout a business career with
the pharmaceutical firm of Astra, founded by his grandfather. In 1931, a
tall, grave man of 36, Gylden published his Chifferbyrdernas insatser i
vdrldskriget till lands, a keen, perceptive study of World War I cryptology
and its effects. Its 139 pages were later translated into English by the
U.S. Army Signal Corps as The Contributions of the Cryptographic
Bureaus in the World War, and portions were published in the Revue
Militaire Fran-false. This book demolished the lingering myth of chamber
analysis, demonstrated the crucial role of errors and of torrents of
ciphertext, and generally crystallized the lessons of World War I and
annaabi.ee 
