WW2 pigeons complete "highly important task," 1940

 

(c) Crown copyright images reproduced by courtesy of The National Archives, London, UK

Catalog numbers AIR2/4129 #245, #246, #247, #248

Above is the message delivered by the pigeons which is described as a “highly important task.”  Unfortunately not many details exist in this series of documents.  The pigeons were "specially trained" by R.W. Beard.  In what way?  For what operation?  What were the "important communications?"