Belgian infantry soldiers in trench fitting message on carrier pigeon during the First world War in Flanders, Belgium Belgian soldier with dog walking in the ruined city of Nieuwpoort / Nieuport after bombardment during the First World War in Flanders, BelgiumWorkers filling shells in the Gaineville ammunition factory at Graville during the First World War Belgian soldiers in trench shooting with rifle and machine gun at German enemies in Flanders during the First World War, BelgiumBelgian infantry soldiers with bayonets fixed to rifles waiting in trench to charge the Germans during the First World War in Flanders, Belgium Pilot and the Belgian king Albert I in front of biplane during the First World War in Flanders, Belgium Soldiers armed with anti-aircraft gun shooting at biplanes during the First World War in Flanders, Belgium Belgian soldiers in ruined house throwing hand grenades towards German enemies in Flanders during the First World War, BelgiumArrival of wounded soldier on stretcher who's being examined by officers and doctor at first aid post in Flanders during the First World War, Belgium.