Point taken, and I'm hoping that Eric Rhude will contribute to the issue.
However... Herewith the first three paragraphs of the article:

In Traveller, the typical player-character that falls into the role of
party medic is simply the one that's managed to accumulate "Medical" skill
somewhere along the line - he/she/it is still an Army or Marine soldier, a
Navy spacer, a Scout, etc., first, and a doctor just by accident. But is
that realistic? Do the various armed forces grab J. Random Enlistee, and
teach him/her/it to be a doctor, or do they look for and recruit people who
have already trained to become doctors, and then teach them the basic
military skills that they will need in the service?