Commander, the fool, maintaining police work is to take place (4,2,4)
I believe the answer is:
come to pass
'is to take place' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for come to pass that I've seen before include "reach mountain road" , "Short military stick" , "Take place" , "Biblically happen" .)