Right to replace 50 among soldiers in sector (6)
I believe the answer is:
'sector' is the definition.
(I know that sector can be written as region)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for region that I've seen before include "Area having definable character" , "Wide area" , "Area - district" , "Tract or area" , "Ignore (anag) - area" .)