Section 796(c) in Police Regulations, Bengal , 1943
(c)Before firing the course, every man shall be given adequate preliminary instruction by selected instructors and under the supervision of the Armed Inspector in all necessary exercises, aiming, etc., both with and without rests. Each man should be allotted a particular musket with which he will receive this preliminary instruction and fire the course. White aiming targets with circular black bull's-eyes, 6 inches in diameter shall be used for this preliminary instruction. For this instruction, the force shall be divided into squads of not more than ten men to each instructor.