The phrase "rebel yell" has been used to describe the battle cry of soldiers during the American Civil War. However, there are many other words and phrases that can be used to describe this powerful and passionate expression of defiance. Some synonyms for "rebel yell" include war cry, battle shout, war whoop, battle cry, battle roar, battle hoot, battle bellow, and battle scream. Each of these words conveys the sense of pride, determination, and courage that soldiers felt as they charged into battle. Whether used in reference to the past or present, these synonyms evoke an intense emotional response, reminding us of the bravery and sacrifice of those who fought for their beliefs.