Dismissing one set of Nazis, control group of law enforcers (5)
I believe the answer is:
posse
'group of law enforcers' is the definition.
(historical term for a group of sheriffs in the US)
'dismissing one set of nazis control' is the wordplay.
I cannot quite understand how this works, but
'of' could be 'o' and 'o' is located in the answer.
'nazis' could be 'ss' (the SS was a Nazi organisation) and 'ss' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for posse that I've seen before include "Band of lawmen" , "Band supporting sheriff" , "Group of sheriff's men" , "power" , "Law-enforcers" .)