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 San Juan River (Florida, United States) or search for San Juan River (Florida, United States) in all documents.

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. Many times before the fall were orders flashed by night by means of waving torches to commands widely separated; and in the daytime the signal-men standing drew on themselves the attention of the Confederate sharpshooters. A message begun by one signal-man was often finished by another who picked up the flag his fallen companion had dropped. The tower at Jacksonville, Florida, over a hundred feet high, kept in communication with the signal tower it Yellow Bluff, at the mouth of the St. John's River. Note the two men with the Signal Corps flag on its summit. Just below them is an enclosure to which they could retire when the efforts of the Confederate sharpshooters became too threatening. Signal stations from the Mississippi to the Atlantic: evidence of the Signal-man's activity throughout the theater of war. After Grant arrived and occupied Chattanooga, Bragg retired up the Cumberland Mountains and took up two strong positions—one upon the top of Lookout Mountain, overl