the first in its category.
By the way, I have found at the NARA photos of pigeons used in Italy.
"War Birds: A History of the 282nd Signal Pigeon Company examines a little-known component of the U.S. Army during World War II. It tells the story of how an old technology - the use of pigeons to carry messages - played a role in the defeat of Nazi Germany.
"'The book explains how pigeoneers were recruited and how they and the pigeons were trained,' said Alosi, an historian and the retired sports information director of Shippensburg University."