The SPAD was a French World War I biplane, designed by Louis Bechereau and built by Societe Pour L'Aviation et ses Derives. It was one of the most capable fighters of the war, and was used by many Allied air forces, including the French, British, American, and Italian. The SPAD was known for its speed, maneuverability, and durability, and was used in a variety of roles, including reconnaissance, ground attack, and bomber escort.