rafale

[…] a salvo is […] a succession of shots […] with the same elevation... a single shot for each piece. By a rafale is meant all the shots of a battery fired with the same elevation, without any determined order, at the rate of more than one shot per gun. According to circumstances, three different kinds of fire are employed ... first, progressive fire; second, fire with a single elevation; third, fire by salvos or by rafales...