German and Bulgarian officers celebrate the birthday of Kaiser Wilhelm II with a song and some horseplay at Jambol, Bulgaria on 27 January 1917. A smiling Oberleutnant Koreuber, proudly sporting his recently awarded Iron Cross 1st Class, stands in the middle of the center row between two Bulgarian officers. Note the grinning Bulgarian officer on the far right with the splendid "Kaiser Bill" moustache and goatee striking a Napoleon-like stance!