A German band marches through St Peter Port High Street,

A German band marches through St Peter Port High Street, Guernsey - the island was occupied from June 1940 until May 1945

Cambridge University academic Dr Gilly Carr, who has spent years researching the 

five-year occupation of the Channel Islands, points out that the indignity of this time was in some ways even worse for the police than for civilians.

"Policemen were required to salute passing German officers, which they found hard to stomach," she said.

Constables Kingston Bailey and Frank Tuck began their first acts of resistance against the occupying forces by putting sand in the petrol tanks of their cars and painting "V for victory" signs around the island.