Answer:
It depends on whether you're talking about tension as in stress or tension as in pressure and tightness. Either of these three work:
- Stress
- Pressure
- Tightness
The 2nd one is the true statement.
Trenches were dug in a zigzag pattern so that if an enemy entered the trench, he could not fire straight down the line. ... The main trench lines were connected by communicating trenches, allowing for the movement of messages, supplies, and soldiers and were lined with barbed wire.
