bill: we are with chelsea medlock, a history professor at oklahoma state university. one of the more interesting topics we have seen is the use of war animals. how common was it for the u.s. and other military forces to use animals in world war i and world war ii? chelsea: it was really quite common up until right after world war ii going into the korean war. in world war i, you had all types of animals, such as horses, the largest group, followed by pigeons, war dogs, camels, elephants occasionally, depending on the terrain and location, oxen and bull. if you can think of any kind animal, it was probably at least in the war, whether it was a pet or mascot or working animal. bill: what were pigeons used for? chelsea: pigeons would be used for carrier pigeons and homing pigeons to convey messages across the lines. bill: messages attached to them? chelsea: yes. one of the more famous ones that the american military used in world war i, its name was sharame. it is credited with saving the lost battalion in 1918. bill: is it because the message it was carrying? chelsea: i