Jennifer Spangler has produced a very interesting blog on World War 2 Military Intelligence and in particular the use of carrier pigeons for the return of messages from agents in occupied Europe.

The blog features scans of many documents – most highly secret at the time – which tell the story of the contribution that carrier pigeons made to the war effort, the risks run by local inhabitants and agents to send back information, and the attempts made by the German forces to thwart the operations.

Click on the image right to be taken to the blog site.