Browsing named entities in The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 8: Soldier Life and Secret Service. (ed. Francis Trevelyan Miller). You can also browse the collection for Coston or search for Coston in all documents.

Your search returned 1 result in 1 document section:

The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 8: Soldier Life and Secret Service. (ed. Francis Trevelyan Miller), The Signal Corps (search)
221=Use white flag. 9—22122=Use black flag. 0—11111=Use red flag. Code signals. 3 = End of word. 33= End of sentence. 333= End of message. 121212 = Error. 11, 11, 11, 3 = Message received (or understood). 11, 11, 11, 3 = Cease signaling. Constant and unbroken waving = Attention, look for signals. To hasten work there were many abbreviations, such as: A = After; B = Before ; C = Can ; Imy = Immediately; N = Not; Q = Quiet; R = Are; U = You and Y = Why. When using Coston signals there were more than twenty combinations of colored lights which permitted an extended system of prearranged signals. White rockets (or bombs)= one; red=two, and green=three. White flags with a square red center were most frequently employed for signaling purposes, though when snow was on the ground a black flag was used, and with varying backgrounds the red flag with a white center could be seen at greater distances than the white. To secure secrecy all important messages were