In 1918 the 1st Escadrille d'Indochine moved to Bach Mai.
In 1939 the unit was redesignated le Groupe Mixte Aérien 595 formed of L'escadrille d'observation 1/595 with the Potez 25 and an escadrille de chasse 2/595 with the Morane-Saulnier M.S.406.