Psychiatric and substance abuse hospitals employed only 3,210 security guards, according to the BLS, less than 8 percent of all hospital guards. However, they were the best paid in the industry, earning an average of $35,000, or $16.83 an hour.
So the basic differences between Cavalry, Artillery and Infantry are as follows. 1  Infantry: Infantry refers to the soldiers on foot. 2  Cavalry: It generally means mounted soldiers. 3  Artillery: It uses large and long ranged weapons.
For the purposes of this paper, the first will be referred to as skirmish drill, and the second as skirmish doctrine or concepts. While the U.S. Army had been using rifles as weapons for auxiliary troops since the American Revolution, the dominant weapon of the pre-Civil War infantry was the smoothbore musket.