Black (code)

The Black Code was a US secret code used by US military attachés in the early period of World War II prior to the entry of the United States. The name derived from the colour of the superencipherment tables/codebook binding. The code was compromised by Axis intelligence, the information leak costing a great many British lives.

Black (code)

The Black Code was a US secret code used by US military attachés in the early period of World War II prior to the entry of the United States. The name derived from the colour of the superencipherment tables/codebook binding. The code was compromised by Axis intelligence, the information leak costing a great many British lives.