Why do you suppose that Harvey birch walked away with the marauders with confidence?

Harvey Birch walked away with the marauders with confidence because he was driven by a strong sense of purpose and loyalty to his cause. His knowledge of the terrain and the dynamics of the group likely provided him with a strategic advantage. Additionally, Birch's inner resolve and determination to protect his own interests may have instilled a sense of fearlessness in the face of danger. Ultimately, his confidence stemmed from a combination of personal conviction and tactical acumen.