Final answer:
The group that organized revivals in Civil War soldier camps was the United States Christian Commission, providing both spiritual support and aid amidst a period rich in religious reforms and abolitionist advocacy.
Step-by-step explanation:
The name of the group that set up revivals in the soldiers' camps during the Civil War was the United States Christian Commission. This organization was formed in response to the needs of soldiers and after the issuance of the Emancipation Proclamation, it also focused on helping newly freed African Americans. Both religious reforms and the abolitionist movement played significant roles during the Civil War era, with religion becoming a means of self-determination for African Americans and abolitionists advocating for the immediate end of slavery on moral grounds.