Emperor Karl I of Austria visiting Kaiser Wilhelm II at Army headquarters, World War I, 1917. Artist: Unknown

- Image ID: A4JYCW
Emperor Karl I of Austria visiting Kaiser Wilhelm II at Army headquarters, World War I, 1917. Artist: Unknown
The Print Collector / Alamy Stock Photo
Image ID: A4JYCW
Emperor Karl I of Austria visiting Kaiser Wilhelm II at Army headquarters, World War I, 1917. Both Emperors salute the guard of honor. A photograph from Der Grosse Krieg in Bildern.