 The squadron was intended to operate as a day-bomber unit over the Western Front in France, and was therefore equipped with de Havilland DH4 aircraft; however at the last minute the squadron was re-tasked to operate against the Turkish army in Mesopotamia (Iraq) and was re-equipped with R.E.8's for its new mission, when the squadron arrived in the Middle East in August 1917.No.63 Squadron remained in Mesopotamia for the rest of the war, and it was disbanded on 29 February 1920.