Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 355
Sometimes the problem is to locate a bigGerman gun. The listening-in station takesthe wireless corrections sent down by the Ger-man plane, while other ol>servers note the order and then spot each shell-burst with regard tothe target—which is known to both sides.Then, by piecing the corrections… … CNEMV oeSER/ER5OIRECTIONS the right. Thus the gun had to be somewhereon a line perpendicular to the range-O. K.line from battery to target (B T line). Nowit took the shells twenty seconds to burst, afterthe German observer commanded fire. Thatindicated that the gun must be, say, four andone-quarter…
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