Be sure to thank a Marine, whenever you get a chance. After all, they defend us even after we make their Commander in Chief someone who can't even pronouce corpsman.
corps·man (kôr'mən, kōr'-, kôrz'mən, kōrz'-)
An enlisted person in the U.S. Navy, serving either with the Navy or the Marines, who has been trained to give first aid and basic medical treatment, especially in combat situations.
A member of a government-sponsored group designated as a corps: Peace Corpsmen.