The trench line was deep enough to walk around the perimeter unseen by the enemy.

The trench lines went for hundreds of miles, I think.

The vehicles didn't come right up to the trench line.

He went up and down the trench line, letting the men know what they'd be doing at dawn tomorrow.

It would have been almost like a trench line from the Great War.

And I don't think those trench lines have moved across an inch of mud since 1935.

The trench line was extended to the west after December 1.

To get the trench lines as close as possible to the enemy's before the battle.

The trench lines on the east of Petersburg were close together.

No trench lines had been dug nor effective defensive positions set up.