Peacemaking in the first half of the 20th century saw the survival of religious-based peace organizations and the development of new groups that combined religious and ethical approaches to war and peace. These included Friends (Quakers) , Mennonite, Amish, Brethren and other traditional peace churches , Catholic movements, including the the Catholic Worker (See Map), general religious organizations , secular anti-war groups , and Civilian Public Service (CPS) Camps for WWII conscientious objectors . Most marker descriptions are quoted from the Swarthmore College Peace Collection archive (See source references).