Reginald Brodie Dyke Acland, 1922 Encyclopædia Britannica (1922)
“ The question of the nature of the work which could be properly demanded of prisoners of war was early found to be a difficult one. In a war of nations such as the World War every able-bodied man replaced by a prisoner is a potential soldier, and, in these circumstances, any work in the enemy country might be said to be “indirectly connected with the operations of war,” especially in cases in which the prisoner was engaged in any step in the manufacture or transport of any one of the multitude of articles necessary for an army in the field. ”
