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.
Most prospective Navy corpsmen first attend Navy recruit training at Great Lakes, Illinois. Navy hospital corpsman initial training is held at the U.S. military's Medical Education and Training Campus, METC, at Fort Sam Houston, Texas. All Navy corpsmen candidates attend the joint Navy and Air Force Basic Medical Technician Corpsman, BMTC, program at METC.