Animals have served with distinction in U.S. military conflicts, but when the U.S. entered WWII, there was no official military dog program. Although dogs had been used in WWI, the training programs had been disbanded so everything had to start from scratch. Due to the urgent need, a civilian created Dogs for Defense, and the military tasked it with finding the dogs. DFD then asked that Americans “loan” their dogs to the cause. Tens of thousands answered the call, and all kinds of breeds and sizes ended up in the military – like the bulldog I wrote about named King Mickey. NEXT: Dobermans Go To War.