books.google.ca - Some eight thousand immigrant-settlers of "enemy" nationality - so called enemy aliens - were interned as civilian prisoners of war in Canada during World War I. The majority, deemed second-class prisoners, were sent to the hinterland of the Canadian Rockies where they were compelled to work on a variety...http://books.google.ca/books/about/Enemy_Aliens_Prisoners_of_War.html?id=9c0q-nTCr8sC&utm_source=gb-gplus-shareEnemy Aliens, Prisoners of War