What does zeal mean in civil war?

In the context of the Civil War, "zeal" refers to the intense passion and fervor exhibited by individuals or groups in support of their cause, whether it be the Union or the Confederacy. This enthusiasm often manifested in the form of strong commitment to military service, political advocacy, or social movements related to the war. Zeal could inspire troops and civilians alike, driving them to take significant actions in pursuit of their beliefs. However, it could also lead to extreme actions and divisiveness, reflecting the deep emotional stakes of the conflict.