It was initially assigned to the
VII Armee front. On 1 April 1916, it was renamed Detachment
Nieuport de Corcieux. On 18 April 1916, it was redesignated, this time as Detachment N73. It became
Escadrille N73 on 4 July 1916. On 1 November 1916, it was one of the units gathered into
Groupe de Combat 12, along with
Escadrille N3,
Escadrille N26, and
Escadrille N103. The unit became
Escadrille Spa73 when it re-equipped with
Spad VIIs in January 1917. The
escadrille left
GC 12 on 18 January 1918, being replaced by
Escadrille SPA.67. On 4 October 1918,
Escadrille Spa73 was cited in orders as having downed 30 enemy aircraft and an
observation balloon. ==Commanding officers==