In some mazes, a picture of a piece of cheese sat outside the exit, next to a hole in the wall where the mouse could escape.

FORBES: The Importance of Telling Employees 'Don't Do That'

Captain Tariq Ahmad, a doctor who examined Pte Cutts shortly afterwards and certified him dead, said he had mistaken a bullet hole over the soldier's eye for an entry wound, when in fact it was an exit wound.

BBC: RELATED BBC SITES