In WW2 the British created the National Pigeon Service and enlisted over 250,000 pigeons to serve during the war.

In WW2 the British created the National Pigeon Service and enlisted over 250,000 pigeons to serve during the war.

Some pigeons were highly decorated for their service. One such bird, a pigeon named G.I. Joe, saved the lives of British soldiers in the Italian village of Calvi Vecchia by delivering a message that prevented a bombing run by allied planes.

The Dickin Medal, often referred to as the animal Victoria Cross, was awarded to 32 pigeons for their service during the war, recognizing their bravery and the lives they saved.

A variety of services made use of Pigeons during the war, including the intelligence services, Army, RAF, Police and Fire Service.

The National Pigeon Service (NPS) was a volunteer civilian organization formed in Britain in 1938 as result of representations made to the Committee of Imperial Defence and the British Government by Major W. H. Osman.

During three and a half years of World War II, 16,554 war pigeons were parachuted onto the continent. One of these was Commando, a red chequer cock bird that became a recipient of the Dickin Medal. Many other NPS pigeons also received the Dickin Medal.

Pigeons were used by a variety of services and the canisters affixed to their legs were colour-coded to distinguish recipients.  The following is some of those used: 

Red = US Forces + British Army

Blue = US Forces + British RAF

Blue with coloured disk = British RAF

Blue with white patch = RAF

Red with coloured disk = British Special Service

Grey = British Special Service

Green = British Special Service

Black = British Civil Police

Yellow = British Commercial

Pigeon NURP 40 TW 194

In 2012, the skeleton of a carrier pigeon was found inside a home chimney in Bletchingley, Surrey, in the southeast United Kingdom. Inside a red canister attached to one of its legs was an encrypted message handwritten on a Pigeon Service form. The message was addressed to "XO2," which is thought to be RAF Bomber Command, and is signed "W Stot Sjt." It is believed to have been sent from France on June 6, 1944 during the World War II D-day invasion. The message consists of 27 five-letter groups, with the first and last group identical. As of February 2019, the message has not been deciphered. Britain's GCHQ, the successor to Bletchley Park has asked for any information the public might have about the message.

The cipher text reads:

AOAKN HVPKD FNFJU YIDDC

RQXSR DJHFP GOVFN MIAPX

PABUZ WYYNP CMPNW HJRZH

NLXKG MEMKK ONOIB AKEEQ

UAOTA RBQRH DJOFM TPZEH

LKXGH RGGHT JRZCQ FNKTQ

KLDTS GQIRU AOAKN 27 1525/6

The form indicates that two copies of the message were sent. Additional notations, in a color different from the code groups and signature, are "NURP 40 TW 194" and "NURP 37 OK 76." These identify the specific birds used. NURP stands for "National Union of Racing Pigeons." The pigeon whose remains were found is apparently 40 TW 194.

Wide press coverage was given to a solution proposed by Gord Young of Canada, based on a World War I coding book. It explains 7 of the 26 unique code groups as ad hoc acronyms, such as "FNFJW - Final Note [ confirming ] Found Jerry's Whereabouts."

However, Michael Smith, a former British army intelligence operator and advisor to Bletchley Park, dismissed Young's purported decryption as "nonsense", explaining "a World War One code ... wouldn’t have been used because it would have been well known to the Germans and insecure." The Government Communications Headquarters (GCHQ) has stated "without access to the original code books, details of any additional encryption, or any context around the message, it will be impossible to decode. Similarly it means that any proposed solutions sent to GCHQ will, without such material, be impossible to prove correct.