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.
Cavalry (from French cavalerie, cf. cheval 'horse') or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the most mobile of the combat arms. An individual soldier in the cavalry is known by a number of designations such as cavalryman, horseman, dragoon, or trooper.he Islamic Prophet Muhammad made use of cavalry in many of his military campaigns including the Expedition of Dhu Qarad, and the expedition of Zaid ibn Haritha in al-Is which took place in September, 627 AD, 5th month of 6 AH of the Islamic calendar.