General Allenby, King Albert - Glass negative photogrpah. Public domain.

Photograph shows Albert I of Belgium with British General Edmund Allenby on the ground east of Tilloy-lès-Mofflaines, Pas-de-Calais, France, which was captured April 9, 1916 during the First Battle of the Scarpe, May 16, 1917 during World War I. (Source: Flickr Commons project, 2015 and Imperial War Museums website: http://www.iwm.org.uk/collections/item/object/205078010)