The Type L became one of the first successful fighter aircraft when it was fitted with a single machine gun that fired through the arc of the propeller, which was protected by armoured deflector wedges.

[1] Built by Morane-Saulnier, large numbers of the Type L were ordered by the French Aviation Militaire at the outbreak of the war.

[5] As an interim measure, they then designed a "safety backup" in the form of braced "deflectors" (metal wedges) fitted to the rear surfaces of the propeller blades at the points where they could be struck by a bullet.

[5] Garros took his Type L fighter into combat with the deflectors in March 1915 and achieved immediate success, shooting down three German aircraft in April, a noteworthy feat at the time.

Leutnant Kurt Wintgens, flying the Parabellum machine gun-armed Fokker Eindecker M.5K/MG prototype E.5/15, a copy of the Morane-Saulnier H with a wire-braced welded steel tube fuselage and fitted with the Fokker Stangensteuerung synchronized gun, downed the first on July 1, 1915, followed by two similar victories on July 4 and 15.

In his book "Sagittarius Rising" he recalled of the LA: Three Pfalz A.II's were used by the Ottoman Empire in an attempt to combat the growing threat of the Arab Revolt[9] A Morane-Saulnier "Parasol" was used for the first flight by an airplane across the Andes on April 13, 1918, when the Argentine aviator Luis Candelaria flew from Zapala, Argentina, to Cunco, Chile; the flight lasted 2 hours 30 minutes and reached an altitude of 4,000 meters.