The sound of the enemy guns was very muted down below the water line.

As the three of them marched into the forest they could hear the enemy guns close by.

The sound of the enemy guns was constant now, like thunder that did not end.

The enemy guns fired but they could not harm him.

Five minutes later an enemy 77-millimeter gun opened fire on the tank point blank.

She entertained the troops, often within the sound of enemy guns.

He didn't have to run the gantlet of enemy guns.

They quickly deployed and put the enemy guns "out of action."

And there was no telling how many enemy guns he would have to confront once inside.

He carried his fire almost into the muzzle of the enemy gun.