Section 155(b) in Police Regulations, Bengal , 1943
(b)He shall direct the firing in such a way as to secure immediate effect with a minimum of injury. Firing over the heads of the crowd or in any direction except on members of the crowd is strictly forbidden, as being likely both to cause injury to innocent persons at a distance and to embolden the participants in the disturbance by having no visible effect. Before he gives the actual order to fire, he should specify the range, the target and the number of rounds to be fired.
