To fight
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13 down for the crossword puzzle is Hornbook
Answer:
The role of Barbed Wire
, Zig-Zag trenches and a rolling barrage of artillery are given below:
Explanation:
Barbed Wire is done by troops to stop the movement of the enemies in order to make barrier in their movement. Zig-Zag trenches are system of trenches dug by troops to provide a safe place of shelter from firing of enemy. A rolling barrage of artillery is a massed sustained artillery fire aimed along the enemy line. A barrage is done to suppress enemy movement and actions through that line.
