Question

Explain why there were multiple layers to the trench system?​

Answer 1

Long, narrow trenches dug into the ground at the front, usually by the infantry soldiers who would occupy them for weeks at a time, were designed to protect World War I troops from machine-gun fire and artillery attack from the air.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

The deeper they dug, the more water would seep in , whether it be from below them or from the rain. When it became too much for the soldiers,they used boards and built stands .