Animals in the war
Horses were regularly used during World War II. Usually on the battlefield of Europe carrying soldiers during patrol missions. Mules were also used. Often trained in the Unites States, were shipped to Europe to help carry supplies on the battlefield. 20,000 dogs were used during World War II for numerous reasons. The first is they carried messages, and even sometimes rescued downed pilots. Scout dogs were also used in infantry groups. Like dogs, Pigeons were also used to deliver messages.
Image: http://i.telegraph.co.uk/multimedia/archive/01477/gasmask-7_1477203i.jpg