heavy artillery

If you are using aircraft and heavy artillery against your people, you are responsible.

My father-in-law called him the "heavy artillery," bringing up the rear after the Jack Russell reconnoitering party.

A heavy artillery duel was kept up, but, notwithstanding the severity of the fire, the Union troops held the position.

(p. 381) The loss of the Rebels by the explosion was very great, as also by the heavy artillery fire.

The next day the area was involved in heavy artillery and infantry fire.

Then came the deep roar of heavy artillery, mingled with the rushing sound of their huge missiles through the air.

On the 9th a more than usual heavy artillery fire took place between our forces and the enemy.