"Since the United States entered World War I without a combat-ready fighter of its own, the U.S. Army Air Service obtained fighters built by the Allies. After the Nieuport 28 proved unsuitable, the Air Service adopted the Spad XIII as its primary fighter. By the war's end, the Air Service had accepted 893 Spad XIIIs from the French, and these aircraft equipped 15 of the 16 American fighter squadrons."
July 22, 2013 4:00 AM PDT
Photo by: Daniel Terdiman/CNET
| Caption by: Daniel Terdiman
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