Cher Ami

Cher Ami (French for "dear friend", in the masculine) was a registered Black Check Cock homing pigeon which had been donated by the pigeon fanciers of Britain for use by the U.S. Army Signal Corps in France during World War I and had been trained by American pigeoneers. He helped save the Lost Battalion of the 77th Division in the battle of the Argonne, October 1918.