INTRAVENOUS ANESTHETIC AGENTS FOR BATTLEFIELD ANESTHESIA USEFUL DRUGS FOR THE INDUCTION OF ANESTHESIA Barbiturates Etomidate Propofol Ketamine ANXIOLYTIC AND AMNESTIC AGENTS Benzodiazepines Scopolamine Droperidol ANESTHETIC AGENTS THAT PRODUCE ANALGESIA Opioid Agonist Drugs Opioid Agonist–Antagonist