"The photo shows Grand Admiral Prince Henry of Prussia (in uniform, centre right) and Lieutenant Rudolf Freiherr von Thuena (in aviator clothes, centre left). On May 25, Rudolf von Thuena won the ""Zuverlaessigkeitsflug am Oberrhein"" (""Reliability Flight in the Higher Rhine Area"") (from 1913 also known as Prinz-Heinrich Flight) with the LVG biplane (behind him), with his arrival in Cologne, for which he received the ""Kaiserpreis"". Several military airplanes took part in the competition."

- Image ID: 2DBHP9T

"The photo shows Grand Admiral Prince Henry of Prussia (in uniform, centre right) and Lieutenant Rudolf Freiherr von Thuena (in aviator clothes, centre left). On May 25, Rudolf von Thuena won the ""Zuverlaessigkeitsflug am Oberrhein"" (""Reliability Flight in the Higher Rhine Area"") (from 1913 also known as Prinz-Heinrich Flight) with the LVG biplane (behind him), with his arrival in Cologne, for which he received the ""Kaiserpreis"". Several military airplanes took part in the competition."

Sueddeutsche Zeitung Photo / Alamy Stock Photo

Image ID: 2DBHP9T

Location: Cologne, North Rhine-Westphalia, Germany