Both passages develop the theme that acting out of a sense of duty can come at a great personal cost.
In "A Horseman in the Sky," Private Carter Druse faces the devastating consequence of having to shoot his father, who was riding a horse, as part of his duty as a soldier. This act illustrates how duty can lead to profound personal sacrifice and emotional turmoil.
In "The Veteran," Old Fleming risks his life to save the colts from the burning barn, demonstrating a commitment to his responsibility, even though it is understood by others to be a nearly suicidal act. His decision ultimately leads to a tragic outcome, reflecting the high personal cost associated with acting out of a sense of duty.
Thus, both narratives reinforce the idea that fulfilling obligations can lead to heartbreaking consequences.