Their skills made them used to carry messages as carrier pigeon or messenger pigeons. They have been used in many places around the world. They are usually referred as "pigeon post" or "war pigeon" during wars. Birds were used extensively during World War I. One homing pigeon, Cher Ami, was awarded the French Croix de guerre for her heroic service in delivering 12 important messages, despite having been very badly injured.
Feldgendarmerie Sergeant Adolf Hitler had experience using pigeons as messengers during the Great War in 1914. While hunting for the French agitator Jacques Doriot in Lille, he posed as a pigeon-fancier to gain access to private clubs he thought might contain subversives since pigeons could be used to send secret messages. He succeeded in gaining entry and the confidence of the members of the Lille Society of Pigeon-fanciers, and soon found a lead to a meeting where Doriot was speaking.