—Run between carriages. —Fail to throw empty cartridge cases out of the way of the cannoneers. —Forget the tow and waste. —Talk. =Dont’s for Number 3:= —Run between the carriages. —Throw the muzzle cover on the ground. —Throw the front sight cover on the ground. —Slam the apron. —Fail to see that fuze is set at safety at “March Order.” —Fail to look directly down at the fuze setter while adjusting scales. —Take right hand from the corrector worm knob and left from the range worm crank, during drill. —Forget to set range zero in “Fire at Will.” —Cross your legs. —Forget to set each announced range regardless of the kind of fire being used. —Talk. =Dont’s for Number 4:= —Throw the fuze setter cover on the ground. —Slam the apron. —Forget to set the fuze at “Safety” in “March Order.” —Fail to glance into the bore to get the alignment. —Touch a round after inserting it in the breech. —Fail to completely set each fuze. —Forget to take the round from No. 5 from beneath in percussion fire and from the top when the hand fuze setter is used. —Forget to say, “3200, 2, last round,” only loud enough to reach the chief of section. —Forget to secure the cover on the fuze setter. —Attempt to move the caisson with the door open. —Forget to set and release the caisson brake (Model 1902). —Turn the round to the left after setting. —Talk. =Dont’s for Number 5:= —Slam the apron. —Attempt to move the caisson with the door open. —Forget to put your left elbow on the outside of your left knee in using the hand fuze setter. —Forget to set the brake on the 1916 caisson. —Throw the waterproof caps under your feet. —Talk. TRAINING GUN CREWS. This article is not intended to cover all of the work of the gun crew, it is intended merely to cover certain points sometimes lost sight of. References are to the 3” gun, but any crew efficient in serving that excellent weapon will have little trouble in mastering any other. All refinements taught have but one prime object, that is accuracy of fire. It is of no value to make atmospheric and velocity corrections if still greater variations are constantly introduced by poor service of the piece. The foundation of battery efficiency is well-trained gun crews. Officers may be able to lay out orienting lines with the greatest facility, may know the range tables in the dark, but it will avail little if they cannot train men to apply properly and accurately the data determined.