Noun
an air force squadron typically containing six airplanes (as in France during World War I)
a small squadron
Source: WordNetThe Warriors were not only used for pilot training, but also as light strike aircraft, and a number of them were employed by the FABF's Escadrille de Chasse (EdC). Source: Internet
He settled into Escadrille 26 to pilot a Spad, and claimed two victories on 2 October 1918, one of which was confirmed. Source: Internet
Later, the Escadrille d'Entraînement (Training Unit) was added. Source: Internet