 Mennonites and other similar peace churches in Canada were automatically exempt from any type of service during Canada's involvement in World War I by provisions of the Order in Council of 1873 yet initially, many were imprisoned until the matter was again resettled.With pressure of public opinion, the Canadian government barred entry of additional Mennonite and Hutterite immigrants, rescinding the privileges of the Order in Council.During Canada's involvement in World War II, Canadian conscientious objectors were given the options of noncombatant military service, serving in the medical or dental corps under military control or working in parks and on roads under civilian supervision.