Brussels, Opera Royale de la Monnaie playbill, May 6th, 1916. Performance by an all German cast during German Occupation of Belgium in World War I. Walter Soomer, Julius Roether, Heinrich Winkelshoff, Karl Wenkhaus, Gustav Schützendorf, Julius Lieban, Walter Eckard, Hertha Dehmlow. The orchestra was composed by Belgian and German Army Bands. Conductor : Richard Hagel. A rarity!