Who broke the wartime codes?

By Nicola Barber

Subjects: Juvenile literature, Great britain, history, 20th century, Cryptographers, Electronic intelligence, World war, 1939-1945, World War, 1939-1945, United states, history, 20th century, Cryptography, World war, 1939-1945, juvenile literature, History, Great britain, history, juvenile literature, United states, history, juvenile literature

Description: This account of the Allied efforts to decode Axis messages and keep the success of their efforts secret describes the men and women behind the scenes, as well as the institutions they served and the early computers devised for the purpose.