Officer was not very specific (7)
I believe the answer is:
general
'officer' is the definition.
(I know that general is a type of officer)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for general that I've seen before include "High-ranking officer" , "Universal" , "Applying to all or most of a group" , "Catholic" , "Regular - officer" .)