Notre Dame's nickname is inherited from Irish immigrant soldiers who fought in the Civil War with the Union's Irish Brigade, (consisting of the 69th NY, 63rd NY, 88th NY, 116th Pennsylvania, and 28th Mass. Infantry Regiments), recollected among other places in the poetry of Joyce Kilmer who served with one of the Irish Brigade regiments during World War I. Though the Irish regiments and Kilmer were well-known, particularly in the urban ethnic community, during the era between the Civil War and World War II, Notre Dame's claim to the nickname is justified since its third president was a famous Irish Brigade chaplain whose ministrations at Gettysburg are commemorated in the "Absolution Under Fire," part of Notre Dame's permanent art collection.