 Complete the following phrase:  On 30 March 1915, it re-equipped with Morane-Saulnier L aircraft, becoming Escadrille MS 15. In September 1915, it traded machines again, gaining Nieuport 11s and being renamed Escadrille N 15. The escadrille was then consolidated into an ad hoc Groupe de Chasse along with Escadrille F 16 and Escadrille N 57. Under the command of Capitaine Paul de Peuty, this groupe was committed to the 