The Navy has the best trained medical personnel of the services. The 0000 basic corpsman (first half of the course is emt-b, the second half is hospital training) is the equivalent of the basic army medic, and then it rolls into a bunch of serious sub-specialties everything from aerospace to ground-pounding SEAL and Marine Corpsman, all the way up to Independent Duty Corpsman. The IDCs run the medical detachments on smaller ships and subs. The only mil equivalent to them is the Special Forces medic. These guys perform surgery, and prescribed meds. The schools only take the best and competition is fierce, then the attrition rate is enormous. You may start in a class of twenty, but on graduation day it can be just you standing there.