(c) Crown copyright images reproduced by courtesy of The National Archives, London, UK Attached thumbnails below are catalog numbers WO208/3556 #51, #52, #53 This is Columba Summery #12 for the first 6 months of 1944. Points in the summary: Returns were low but considered critical during the pre-invasion period; 4424 pigeons were dropped by parachute; Operation Columba provided the first intimation of “order of battle” news considered important to SHAEF regarding German troop movements; 5 reports gave the first news of military underground works; Names of collaborators were sent to SHAEF, per their request; After the invasion began the Germans offered big rewards for the capture of Allied pigeons; In Denmark, pigeon owners were given the choice of killing their pigeons or turning them over to the Wehrmacht. These documents and other WW2 pigeon documents are at: http://worldwar2militaryintelligence.blogspot.com/