This old legend might be the first military myth new recruits come across, and it might have been around for as long as saltpeter itself. Despite the combined efforts of science, health education, and common sense, somehow, the myth of the military adding saltpeter to the food or beverages in basic training still persists.  History with Using Nitrated Sodium Salts Why would the Army, Navy, Air Force, Coast Guard, or Marine Corps do such a thing? The legend says they would add saltpeter to...