British officers line up outside the Citadel on the parade grounds for their daily roll call by a German non-commissioned officer. Roll calls helped guards maintain security by identifying absent war prisoners. Frequent roll calls, especially at night, led to POW complaints of abuse. At Mainz, however, the British officers appear to take the roll call in stride.
Germany, Mainz, Camp Order, Security, British POWs, German Guards, World War 1914-1918