Once equipped with Morane-Saulnier Ns, it was posted to I Armee of the French Army.

In April 1915, it returned to I Armee; on the 26th, it began re-equipping with Nieuport 10 two-seaters.

When the unit acquired Lieutenant de Villeneuve as commander in mid April, he instituted the use of a Roman archer as the escadrille insignia.

However, it would not totally rearm with SPADs until 17 September, when it was renamed Escadrille SPA 31.

When the armistice came, it had been credited with 42 aircraft and four observation balloons destroyed, and have earned two citations from Army Corps.