I was a Corpsman (HospitalCorpsman is the "official" title) I got out as an HM2/E5.
A unit Corpsman goes through "8404" - Field Med School, and nearly everyone in my Corps School Class went through it (most to Cp LeJeune, Jacksonville N.C.)
There are other field affiliations: For example, the Navy/MC version of a MASH is "Med Bat." In peace time you spend a lot of time polishing instruments and painting rocks, set up the tent, take down and pack the tent, do "bug out" drills ...
In theater, you can be in a near front-line evac unit, or well behind the line at a field hospital. There is / are (I believe) one or more hospital ships deployed ... a floating hospital.
As a unit Corpsman, you are with the Grunts, doing whatever the grunts of your unit are doing. If you are in a transportation group, you ride ... if you are with Recon, you sneak around ... and if you're in a rifle company, you're "up front and having fun".
As a group, Corpsman will be doing any job you'd see at any hospital .... there are Corpsmen drivers, Corpsman Adminssion Unit clerks, Corpsmen that work the ER ... even Corpsmen "Vertical Transport Operation Specialists" (Elevator Operators, usually fvck-ups).
As a "C" school (Advanced Training) thre are the usual variety of specializations: Lab Tech, Histo Tech, Cyto Techs, Pharmacy, PT/OT, Peds, OR Tech, Mortuary Tech .... again, any type of specialized Technician work you'd see any any other Civilian hospital. Many of those specialties are also "out front" at a Med Batt / Field Hospital. ... you still need Lab, OR, Ortho, Psych folks ... even if you're out in the field.
Some of the cooler jobs include MedEvacs (Ride the 'copters with patients) ... I was with EOD (Explosive Ordanance Disposal - Group Two, Ft. Story, VA Beach) as TAD (temporarily assigned) for two stints of 13 weeks each. We spent the time sweeping the Intra-Coastal Waterway that passes through Cp. LeJeune collecting unexploded rounds so the Army Corps of Engineer dredges wouldn't suck 'em up when they scooped out the waterway. Twice a day, we blew up the rounds collected .... blowing things up was a good time.
I also pent time as a "Beach Corpsman" working with three others running the Dispensary at Onslow Beach. Uniform of the day was a swinsuit and Tech jacket, pith helmets were optional. We held sick-call for 27 Marine Lifeguards, and took care of injuries (cuts, jellyfish stings) for the beach visitors - Base personnel and their dependents. We also covered that edge of the base for accidents (we did a helo crash at the nearby TLZ, and a Marine that hung himself on his rifle strap doing a rope slide out of a Huey)
I also spent time in Dispensary Services at LeJeune filling in for Unit Corpsmen that were on leave, or to fill temporary vacancies. So, I did time at the rifle range, the Brig, Motorpool/transportation, HQ Batt, and some misc rifle companies. I also filled in at the Physical Exam Center ... I participated in Leon Spinks physical on his way to the Olympics.
The last two years, I worked in Clinical Investigation and Research Service (the Navy does research too!) doing mostly photography ... Photomacrography and Electronmicroscopy, and some work in the Animal Lab. Our main projects were "Pre-disposing Factors for Glamarulo-nephritis" and some studies for stimulating the auto-immune system to fight (mostly) lung cancers. We also did some work extracting enzymes from boa constrictor lungs to see if they could be used to reduce / prevent neonatal collapsed lungs.
SO, hopefully the concept you are getting is that there's more to front-line medical than severe trauma, and even at or near the line, there is a broad spectrum of jobs for you to consider. Even within the narrower "Emergency Health Care Delivery" field, there are a variety of disciplines to pursue.
See your Recruiter, take the tests, trust about 50% of whatever he tells you. Then go home, think real hard about it ... it ain't as portrayed on TV or the movies (although Private Ryan came about as close as anything).
If you have an AMVETS or VFW post or similar, go there and talk to poeple, hopefully Field Medical people. Visit a VA hospital and talk to the staff folks there ... many are ex-military ... maybe do some volunteer time to get a feel for it.
I don't regret any of my time. Thinking back, I'd probably do it all over again.
OH! And the usual program is "Chose your Rate, or Choose your Base" (Within the limits of the DreamSheet). When I was in, if you signed up for a program (like Corpsman), and later you were found to somehow not qualify, you could get out. They usually tried to pursuade you to move to another rate ... but you could get out clean if they couldn't deliver.
If you're leaning towards the Army, you'd be looking for a 91 Alpha, Bravo, Charlie (A-school, B-school, C-school) MOS (Military Occupational Specialty). I wasn't in the Army, but friends that were said that in the Army Medical Department, you are first an Infantryman, then a Medic ... unless you were a CO, you could be assigned to just about anything, including pure Infantry duty.
Good Luck
Scott
SR (1975) - HM2 (1979), no pushbuttons.