The sign on the wire between Belgium and Holland read ???Warning! High Voltage. Danger to Life??? with a guard house behind in case anyone successfully crossed the wires. STUNNING black and white images showing what life was like for prisoners of war who attempted to escape during WW1 have been unveiled in a new book. The series of historical images show the high security precautions of Prisoner of War camps to deter escapees with guarded electric fences between Belgium and Holland and a room full of soldiers who were recaptured after an unsuccessful attempt. Other pictures show failed escape and hidden excavation tunnels. The images have been released in the book Prisoners and Escape WW1: Those Who Were There which has been edited by Rachel Bilton and published by Pen & Sword. Each chapter of the book has been written by prisoners who were there. Rachel Bilton / mediadrumworld.com