. The photographic history of the Civil War : in ten volumes . many abbreviations, such as: A^ After : B = Before ; C = Can ; Imy — Immediately ;N = Not ; Q = Quiet ; K = Are ; U = You and Y = Why. AVlien using Coston signals there were more than twentycombinations of colored lights which permitted an extendedsystem of prearranged signals. White rockets (or bombs) =one; red=two, and green=three. White flags with a squarered center were most frequently employed for signaling pur-poses, though when snow was on the ground a black flag wasused, and with varying backgrounds the red flag with a whit
. The photographic history of the Civil War : in ten volumes . many abbreviations, such as: A^ After : B = Before ; C = Can ; Imy — Immediately ;N = Not ; Q = Quiet ; K = Are ; U = You and Y = Why. AVlien using Coston signals there were more than twentycombinations of colored lights which permitted an extendedsystem of prearranged signals. White rockets (or bombs) =one; red=two, and green=three. White flags with a squarered center were most frequently employed for signaling pur-poses, though when snow was on the ground a black flag wasused, and with varying backgrounds the red flag with a whitecenter could be seen at greater distances than the white. To secure secrecy all important messages were encipheredby means of a cipher disk. Two concentric disks, of unequalsize and revolving on a central pivot, were divided along theirouter edges into thirty equal compartments. The inner andsmaller disk contained in its compartments letters, termina-tions, and word-pauses, while the outer, larger disk contained fS mi f>J •i ,h- ? ,!. .i-»»,Tij//;. m AT YORKTOWN Skilled Union signal parties were availa-ble for the Peninsular campaign (if 18G2,where they rendered invaluable serviceto McClellan. Work strictly for thearmy was supplemented by placing signalofficers with the navy, and thus ensuringthat cooperation so vitally essential tosuccess. The victory of Franklins com-mand at West Point, after the evacuationof Yorktown, was largely due to theefficiency of the Signal Corps. Vigor-ously attacked by an unknown force,Franklin ordered his signal officer to callup the fleet just appearing down the keen-sighted signal officer was alert onthe gunboat, and in a few minutesFranklins request that the woods beshelled was thoroughly carried out. Thisphotograph shows the location of UnionBattery No. 1 on the left, in the peach-orchard, at Yorktown, and the York Riverlies at hand, to the right of the house.
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Keywords: ., bookauthormillerfrancistrevelya, bookcentury1900, bookdecade1910
