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D Chart "A" Annex to F.O. #3 27 August 1918. OBCA. Method of Fire: Successive Concentrations (3) three minutes. Time No. of Obj ective for all Rounds Batteries. per Qun 45 H to Hplus 3 25 H plus 3'to H plus 11' 00 THYBS 4 5 48-28 H plus 11' to H plus 14' 35 H plus 14 to H plus 34' Right 180 Rest 50-13 00 25 Rasic Rest H plus 24' to H plus 27 17 50-26 H plus 27' to H plus 36 ° 00 Rest H plua 36' to H plus 39' 25 44-28 4/54/400 H plue 39' to H plus 54 ° 00 H plus 54' to H plus 571 25 the Rest 48-38 H plus 57' 00 Cease Fire