Religion was very important in the soldier's daily routine. Many of the men attended church services on a regular basis and some even carried small testaments with the rest of their baggage. Union and Confederate armies had numerous regimental and brigade chaplains. These loyal officers also acted as assistants in field hospitals comforting the sick and wounded, and writing letters home for those who could not write. Chaplains held field services for their respective units and most accompanied the soldiers as they marched onto the battlefield. Father William Corby, the chaplain of the Irish Brigade, is best remembered for his granting of unconditional absolution to the members of the brigade before they marched into battle in the Wheatfield on July 2nd. Father Corby was immensely popular with the men and in the post-war era became president of Notre Dame University.