or BIG MISTAKE
Back during the time when there were knights, kings and queens people used horses to ride into battle or use them to ambush or sneak up on enemies. But as time went on and technology began to advance horses were not needed anymore, but the soldiers insisted on using them anyway. With machine guns and tanks and bombs horses were being torn apart, being shot and just flat out being destroyed. The soldiers on the front line were witnessing the horses getting obliterated and some of them were seeing this and they were getting sad, angry, upset all these things because they felt those innocent horses shouldn't have had to go through that. An example from the book is when detering seen the horses getting killed and he was really upset and he wanted to go and save them.