Code

Code: A means taken in giving signals and transmitting messages in the army and navy to see that they cannot be interpreted by an enemy. Secret code books have been known to be stolen; and it is doubtful whether any code is really secret or undecipherable. The basis of the army cypher code is an arbitrary arrangement of five letters. It is forbidden to put part of a message in code and part in plain writing lest, by falling into hostile hands, the key to the code should be revealed.