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how was barbed wire used in ww1 how was barbed wire primarily used in wwi how was barbed wire used in world war i how was barbed wire used in world war one how were barbed wires used in ww1 how was barbed wire used during wwi how was barbed wire developed in ww1 was razor wire used in ww1 how many miles of barbed wire was used in ww1 when was barbed wire first used in ww1
