=Section 12. Targets.= The accompanying plates show the details and size of the targets: [Illustration: TARGET A, TARGET B, TARGET C, TARGET D.] =Section 13. Pistol and revolver practice.[11]= [Footnote 11: Whenever in these regulations the word "pistol" appears the regulation applies with equal force to the revolver, if applicable to that weapon.] =135.=[12] =Nomenclature and care of the weapon; handling and precautions against accidents.=--The soldier will first be taught the nomenclature of those parts of the weapon necessary to an understanding of its action and use and the proper measures for its care and preservation. Ordnance pamphlets Nos. 1866 (description of the Colt's automatic pistol), 1919, and 1927 (descriptions of the Colt's revolver, calibers .38 and .45, respectively), contain full information on this subject, and are furnished to organizations armed with these weapons. [Footnote 12: The numbers refer to paragraphs in the Small Arms Firing Manual, 1913.] Careless handling of the pistol or revolver is the cause of many accidents and results in broken parts of the mechanism. The following rules will, if followed, prevent much trouble of this character: (_a_) On taking the =pistol= from the armrack or holster, take out the magazine and see that it is empty before replacing it; then draw back the slide and make sure that the piece is unloaded. Observe the same precaution after practice on the target range, and again before replacing the pistol in the holster or in the armrack. When taking the =revolver= from the armrack or holster and before returning it to the same, open the cylinder and eject empty shells and cartridges. Before beginning a drill and upon arriving on the range observe the same precaution. (_b_) Neither load nor unlock the weapon until the moment of firing, nor until a run in the mounted course is started. (_c_) Always keep the pistol or revolver in the position of "Raise pistol" (par. 147, Cavalry Drill Regulations, 1916), except when it is pointed at the target. (The position of "Lower pistol" is authorized for mounted firing only.) (_d_) Do not place the weapon on the ground where sand or earth can enter the bore or mechanism. (_e_) Before loading the =pistol=, draw back the slide and look through the bore to see that it is free from obstruction. Before loading the =revolver=, open the cylinder and look through the bore to see that it is free from obstruction. When loading the =pistol= for target practice place five cartridges in the magazine and insert the magazine in the handle; draw back the slide and insert the first cartridge in the chamber and carefully lock the hammer. In loading the =revolver= place five cartridges in the cylinder and let the hammer down on the =empty chamber=. (_f_) Whenever the pistol is being =loaded= or =unloaded=, the muzzle =must be kept up=.