MOs have to enlist first, then disrupt officially for medical
studies then can go back as CPT.
Otherwise, they still retain their old rank.
I know a few disruptees who disrupted for studies initially wanted
to study something else but end up in Medicine. When they serve
their remaining months, they use back their old rank even though
they are recognised by SMA to practice in Singapore.
This was the case at Rifle Range camp, where sickos have to report
sick at Maju. BUt have to be first cleared by a 3SG doctor who was
serving out his remaining months. haha