CHAPTER XII. 

 SIGNALS AND CODES. 



(Extracts from Signal Book, United States Army, 1916.) 



General Instructions for Army Signaling. 



1. Each signal station will have its call, consisting of one or 

 two letters, as Washington, " W" ; and each operator or sig- 

 nalist will also have his personal signal of one or two letters, 

 as Jones, " Jo." These being once adopted will not be changed 

 without due authority. 



2. To lessen liability of error, numerals which occur in the 

 body of a message should be spelled out. 



3. In receiving a message the man at the telescope should 

 call out each letter as received, and not wait for the com- 

 pletion of a word. 



4. A record of the date and time of the receipt or trans- 

 mission of every message must be kept. 



5. The duplicate manuscript of messages received at, or the 

 original sent from, a station should be carefully filed. 



6. In receiving messages nothing should be taken for 

 granted, and nothing considered as seen until it has been posi- 

 tively and clearly in view. Do not anticipate what will follow 

 from signals already given. Watch the communicating sta- 

 tion until the last signals are made, and be very certain that 

 the signal for the end of the message has been given. 



7. Every address must contain at least two words and 

 should be sufficient to secure delivery. 



8. All that the sender writes for transmission after the word 

 " To " is counted. 



