Which describes the attitude of soldiers on both sides at the beginning of the Civil War?

At the beginning of the Civil War, soldiers on both sides were often optimistic and confident, believing that the conflict would be short and decisive. Many were motivated by strong ideological beliefs, such as patriotism and a sense of duty to their respective causes. However, they were largely inexperienced and underestimated the brutality and duration of the war ahead, leading to a contrast between their initial enthusiasm and the harsh realities they would soon face.