Cambodian police ranks and insignia

A website called has this field guide to Cambodian police ranks and insignia. The keys read from top to bottom and from left to right:

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staff sergeant – first sergeant – sergeant-major (kiss me goodnight) 

warrant officer – chief warrant officer.

Screen Shot 2015-04-13 at 7.29.13 PM1st lieutenant – 2nd lieutenant – captain

major – lieutenant-colonel – colonel

Screen Shot 2015-04-13 at 7.29.19 PMbrigadier-general – major-general – lieutenant-general – general

Screen Shot 2015-04-13 at 7.28.56 PMI’ve been told that the rank of police captain doesn’t carry a lot of clout – “a captain sleeps on his motorbike.” I’m still trying to find out what responsibilities the various higher ranks would carry – what rank, for instance, would the head of police at khan level carry?