Manual of military engineering . Two Tiers of Fire7s ^tcLoing ofPlcaiksanJilBarrels. SancUbag loaphdUor caiy other sortof loophole. «06^h 05 Weller A Graham. L^ Lonuon. CHAPTER VIII.—IMPROVEMENT OF EXISTING COVER, ETC. 27 which should, nevertheless, conform to the conditions abovelaid down as far as possible. Figs. 6 and 7 suggest methods for preparing walls for a doubletier of fire, which might be used for flanking purposes. 56. In preparing hedges for defence, weak places should be Hedges,made up with boughs, stakes, wire, &c., and if a ditch is on the defenders side, little else requ


Manual of military engineering . Two Tiers of Fire7s ^tcLoing ofPlcaiksanJilBarrels. SancUbag loaphdUor caiy other sortof loophole. «06^h 05 Weller A Graham. L^ Lonuon. CHAPTER VIII.—IMPROVEMENT OF EXISTING COVER, ETC. 27 which should, nevertheless, conform to the conditions abovelaid down as far as possible. Figs. 6 and 7 suggest methods for preparing walls for a doubletier of fire, which might be used for flanking purposes. 56. In preparing hedges for defence, weak places should be Hedges,made up with boughs, stakes, wire, &c., and if a ditch is on the defenders side, little else requires to be done. If not onthe defenders side, something in the nature of a shelter trenchmay be dug, and the earth thrown up breast high against itwhen such command is necessary, and if the hedge is strongenough to support it. In no case should excavated earth be thrown in front of thehedge, so as to indicate its occupation. The time required to excavate such trenches is longer thanfor ordinary trenches on account of the presence of roots,and the work required to strengthen the hedge. In preparing a hedge for defence,


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