massed fire

1. The fire of the batteries of two or more ships directed against a single target.
2. Fire from a number of weapons directed at a single point or small area.

Thesaurus

Noun

1.

massed fire - fire from two or more weapons directed at a single target or area (as fire by batteries of two or more warships) concentrated fire firing, fire - the act of firing weapons or artillery at an enemy; "hold your fire until you can see the whites of their eyes"; "they retreated in the face of withering enemy fire"