The SPAD S.XIII was a French biplane fighter aircraft of World War I, developed by Société Pour L'Aviation et ses Dérivés (SPAD) from the earlier highly successful SPAD S.VII. It was one of the most capable fighters of the war, and one of the most-produced, with 8,472 built and orders for around 10,000 more cancelled at the Armistice.
The SPAD S.XIII first flew on 4 April 1917, and in the following month was already being delivered to the French Air Service. Other Allied forces were quick to adopt the new fighter as well, and nearly half of the 893 purchased for the United States Army Air Service were still in service in 1920.
The S.XIII was flown by famous French fighter pilots such as Georges Guynemer and Rene Fonck, and also by Italian ace Francesco Baracca. Aces of the United States Army Air Service who flew the Spad XIII include Eddie Rickenbacker (America's leading ace with 26 confirmed victories) and Frank Luke (18 victories).
Source: Wikipedia, "SPAD S.XIII", available under the CC-BY-SA License.
As Described In
Red Baron: The best French scout of the war, the Spad 13 is very fast. It's also the sturdiest aircraft of the war.
Knights of the Sky: The Spad 13 was developed to replace the earlier Spad 7. It was powered by a geared 220 or 235 horsepower Hispano-Suiza V-8 engine and carried two Vickers machine guns firing through the propeller. Virtually all French Escadrilles eventually received Spad 13s and at least one Squadron of the RFC was equipped with this fine aeroplane. Although difficult to fly at low speeds, it was extremely sturdy, heavily armed, and very fast by the standards of the day.