The US Army used specially trained homing pigeons to carry messages during WWI and WWII. They were considered an undetectable method of communication. Fort Monmouth was the home of the US Army Pigeon Breeding and Training Center from 1917 until 1957. A small capsule would be placed around the leg of the pigeon and a paper message was put into the capsule. The bird would be released to fly to its home loft with the message. Pigeons can fly hundreds of miles in a day. A mile a minute is the average speed. Over 90 % of all messages sent by the US Army using pigeons were received. Pigeons also carried maps, photographs and cameras. The birds are credited with saving thousands of lives. The US Army discontinued using pigeons as message carriers in 1957 due to expedient modern transmission methods.