"Such was the use of horses on the Western Front, that over 8 million died on all sides fighting in the war. Two and a half million horses were treated in veterinary hospitals with about two million being sufficiently cured that they could return to duty."
"The loss of a friend - He would work for 24 hours a day without winking. He was quiet as a lamb and as clever as a thoroughbred, but he looked like nothing on earth, so we lost him. The whole artillery battery kissed him goodbye and the drivers and gunners who fed him nearly cried."
Go to one of the private WW1 cemetaries in northern France and see pictures of bits of horses hanging out of trees where they had been hit by an artilliary shell. THAT'S what happened to many of them I'm sad to say. I suppse they died instantly though, so were the lucky ones.
Needless to say I won't be going to see the film of War Horse.