War and Conflict World War I. (1914-1918). King Albert I of the Belgians visits the western front where he is shown an old German dug-out by General Gough, right. [Getty Images]

War and Conflict, World War I, (1914-1918), King Albert I of the Belgians visits the western front where he is shown an old German dug-out by General Gough, right (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images) — see more

War and Conflict, World War I, (1914-1918), King Albert I of the Belgians visits the western front where he is shown an old German dug-out by General Gough, right (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)

Popperfoto Paul Popper/Popperfoto