“堑壕迷宫”的布局起初,堑壕只是被草草挖出的壕沟。随着战争的进行,交战双方逐渐摸索出很多诀窍,战壕不断被加固完善,防御威力与日俱增,简陋的壕沟逐渐升级成一道道错综复杂的“堑壕迷宫”。根据战场形势的不同,“堑壕迷宫”通常由2~4条平行的战壕组成。我们以三条战壕为例来说明,从前到后依次是前线战壕、支援战壕和预备战壕,每一条战壕前从头到尾都布置着铁丝网,每两条战壕之间部由安全 “Trench ditch ” layout At first, trenches just being trenched dredged. As the war progressed, the two warring sides gradually worked out a great deal of know-how. The trenches were constantly being strengthened and the defensive capabilities were increasing. The shabby trenches gradually escalated into a complex “trench ditch.” Depending on the battlefield situation, the “trench labyrinth” usually consists of two to four parallel trenches. Taking the three trenches as an example, we show that from front to back are front-line trenches, trenches and trenches. Barbed wire is arranged from the front to the back of each trenches. The security between the two trenches