'The July Exodus', 1918

Watercolour by J W Shaw, Oxfordshire and Buckinghamshire Light Infantry, attached to the Royal Flying Corps, November 1918.

In July 1918, 29 English officers escaped through a tunnel dug under the wire at Holzminden prison in southern Germany. Ten of them managed to reach Holland. The tunnel had taken nine months to dig, using knives, forks and spoons.