Complex sentence: The SPAD S.A (also called S.A.L.) was a French two seat tractor biplane of 1915 that saw some service with France and Russia in the early stages of the First World War in the fighter and reconnaissance roles.
Split into simpler sentences: The SPAD S.A (also called S.A.L.) was a French two-seater tractor biplane created in 1915. It was used in the service of France and Russia in the early stages of the First World War in the fighter and reconnaissance roles.