My initial Obese BMT, all those who got injured and OOC, became
Specialists.Those that passed, became combat support.Two who went
to SISPEC and OCS, did not choose to be commanders. 
Techs and Mil Intel, it depends on your education and clearance.But
Mil Intel has definitely way higher clearance than a tech, which
already is rumoured to be slightly higher than the ordinary
soldier, esp if you're comms/armament tech.