Answer:
Both show violent death arriving suddenly.
Step-by-step explanation:
In "A Horseman and the Sky," we learn about a soldier who finds it difficult to kill the man he is meant to kill. Instead, he shoots the horse that the man is on, and in doing so, creates a vision of a man jumping through the sky. We later learn that this man was the soldier's father. In "The Death of Reynolds," we see Reynolds, who is a commander of the Union Army who is killed from behind. Both of these depictions of the Civil War show that violent death can arrive suddenly in war.