Nigel Allsopp has been writing the story of the combat cops, also known as the Military Police, for many years. There are over 40 nations involved where Military Police serve. Combat Cops must be one of the least appreciated yet most indispensable military figures in modern history. In the mobile warfare of the 21st century no army could keep its vital supply routes open without the military police. This book documents the organisation of many of the World's military police units. Their duties included VIP close personnel protection, traffic control; maintaining military order and discipline; collection and escorting prisoners of war; prevention of looting; disarming civilians; checking captured enemy soldiers for documents; training local police forces and providing street patrols in occupied areas. They are also one of the military's least known organisations.