The jobs the spies had were to break codes.  They also gave misinformation to their enemies.  The spies would lie and say they were on one side; but they would really be on the other side.  They would dress like normal people to trick their enemies.  If they got caught they wouldn't give any information. Often they would kill themselves so they wouldn't be forced by the Germans to share their secrets. They would spy and steal their enemies information.  Spies usually worked by themselves.  Some spies were traitors, but most were not.
 

Women of the OSS

The Voluntary Intercepters of WWII

     This article is on how wireless radios
were used.  This also talks a lot about morse
codes and how it would be used.  They used
three different categories:  commercial traffic,
British Armed services, and German Army
and Naval traffic.  Read this article to find
out more.