I dont know if thats true or not The numbers of horses lost by many countries was not well tracked during the war Britain lost almost half a million horses or one horse for every two men lost In writing Horses in World War I I was unable to find solid statistics for how many horses were lost overall The US sent over a million horses overseas during the war with only about  returning to the US and Australia shipped over  overseas with only one returning However not all of these horses were killed in the war  some were slaughtered afterwards and some were sold to local populations The Brooke Hospital for Animals was formed after the war in response to a young British woman seeing the neglect and abuse many British horses was facing after being sold in Egypt rather than being taken back to Britain I still havent seen the movie however  my schedule keeps not allowing it