Don't Delete a Career ??
 

Is it true that you can't delete a career without deleting all of same. I'm using SH Commander so I would delete a career through commander.

Deleting a SAVE GAME will delete everything past it. So yes, don't delete save games untill you're finished with the career.

Deleting a CAREER should only delete that career, not other captains.

By definition deleting a career does just that - deletes the whole career.

You can delete save games within a career from within SH3 (but note that every subsequent save point is deleted as well).

Deleting one career does not delete all your careers.

EDIT: SNAP, kylania.