During World War II,many German spies were all around England. If somebody spread any news about Britain's ships or attacks , there was a high chance of the news reaching a German spy and the allies plan would be spoiled.

The piture and slogan is trying

to get across that anyone could

be a spy and if you let any info

out it could cost hundreds of

lifes. Of course, your not going

to have lods of infomation under

your hat but they ment keep the

information you kow to your selfs.

As you can tell,nobody could be

trusted.