Noun
the heavy fire of artillery to saturate an area rather than hit a specific target
Source: WordNetGentlemen, you are the leaders of the best soldiers in the world. I will give you five or six of my own men; we will cover your back with sustained barrage fire to protect you while you cross the rue de Rivoli. All you need to do is force open a door to fight your way to the tapestry. Dietrich von Choltitz
they laid down a barrage in front of the advancing troops Source: Internet
the shelling went on for hours without pausing Source: Internet