Bog-standard is a well-known informal term, which originated in Britain; it means something ordinary or basic, but often in a dismissive or derogatory way.
corpsman. An enlisted person in the US Armed Forces who works as a member of the medical team. During duty in the armed forces he or she receives training and experience in one or more health-related fields. In wartime, a corpsman may be assigned as the only medically trained person to a field unit or a small ship.
Men and women between 17 and 34 years of age can enlist to serve as a U.S. Navy hospital corpsman. They need a minimum Armed Services Vocational Aptitude Battery combined test score for the hospital corpsman rating of 149.