Crossword Genius

Order a set of books for officer (10)

Ross

I believe the answer is:

commandant

'officer' is the definition.
(commandant is a kind of officer)

'order a set of books' is the wordplay.
'order' becomes 'command' (commanding is a kind of ordering**).
'a set of books' becomes 'ant'.
'command'+'ant'='COMMANDANT'

'for' acts as a link.

(Other definitions for commandant that I've seen before include "one who takes charge" , "Officer in charge of a place or group of troops" , "Military officer in charge of a place" .)

I've seen this clue in The Telegraph.
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