According to Fantasy of Flight:

In early 1917, the British Sopwith Triplane began flying in combat, so the German High Command requested that a triplane be developed for their use.

Many concepts were tried in an effort to produce aircraft that outperformed the enemy. Several companies entered the competition; the contract was awarded to Anthony Fokker, a Dutch aircraft designer who had been building aircraft in Germany from before the war.

While not as fast as contemporary fighters, the Fokker Triplane had a reputation as a great dogfighter due to its great climbing and turning ability. Although over 300 were built, no original Fokker Triplanes are left in existence; the last was destroyed in WWII bombings of Berlin.

This aircraft is painted in the colors of Manfred von Richtofen, the famous “Red Baron,” who achieved 19 of his last 80 victories in the triplane. On von Richtofen’s last day, the front lines had been in flux, and he found himself chasing a Sopwith Camel at low level over enemy territory. Although there are many stories about his death, it is generally accepted that he was killed by one bullet from the ground. Photographs were taken of the funeral, and British planes dropped them over his aerodrome with this message:

TO THE GERMAN FLYING CORPS: Rittmeister Baron Manfred von Richthofen was killed in aerial combat on April 21st, 1918. He was buried with full military honors. –From the British Royal Air Force

Taken with a Sony RX-100 M3.