Name _______________________________                                     Date________________________ Maryland in the Civil War: Signaling an Invasion Activities Worksheet Name the physical and human-made features that are identified in Lieutenant MilnerŐs message. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ When were the following methods of communication first used? Carrier Pigeon _______________ Email _______________ Flags _______________ Postal Mail _______________ Radio _______________ Telegraph _______________ Telephone _______________ Put these dates on the timeline below: Write at least one advantage and one disadvantage for each of these methods for carrying messages during war time. Method Advantages Disadvantages Carrier Pigeon             Flags             Postal Mail             Telegraph             What is going on in each of the nine pictures that make up the large Signal Corps image? In each box write a short description of the scene or situation in which the Signal Corps is at work. Here are the flag signals that were used by the Signal Corps during the Civil War. Ready 1 2 3 4 5 Here is the alphabet using these number signals. A B C D E F G H I J K L M N 11 1423 234 111 23 1114 1142 231 2 2231 1434 114 2314 22 O P Q R S T U V W X Y Z 14 2343 2342 142 143 1 223 2311 2234 1431 222 1111 5 - the end of a word. 55 - the end of a sentence. 555 - the end of a message. Now decipher the following message: ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 114 23 23 5 142 23 1 142 23 11 1 2 22 1142 5 ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ 2311 2 234 1 14 142 222 5 14 223 142 143 555

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