Special Investigation Branch
The Special Investigation Branch ( SIB ) is the name given to the detective branches of all three British military police arms: the Royal Navy Police , Royal Military Police and Royal Air Force Police . 
<triplet> Special Investigation Branch <subj> British <obj> country <triplet> Royal Navy Police <subj> British <obj> country <triplet> Royal Military Police <subj> British <obj> country <triplet> Royal Air Force Police <subj> British <obj> country <subj> military police <obj> instance of