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.
The level of combat infantry officers experience is largely based on the wars and conflicts U.S. military branches engage in over a period of time.Infantry or front line soldiers that engage enemies in land battles. Officers can lead combined armed forces of as many as 200 to 300 soldiers in combat.he level of combat infantry officers experience is largely based on the wars and conflicts U.S. military branches engage in over a period of time.