The squadron continued to operate from the St Omer area in support of the British Army around Ypres for most of the war, at airfields such as Boisdinghem and Saint Marie Cappel.  On 21 September 1917, it completed its re-equipment with the replacement for the FE2D, the Bristol Fighter, which was to equip the squadron for the next 15 years. The squadron conducted daily detached operations from Bruay, near Bethune during the major German offensive in March 1918, and moved further south to several airfields east of Amiens as allied armies moved forward during the 100 Days Offensive.