Upon his return to England in April 1918, Bishop was promoted to major and given command of No. 85 Squadron, the "Flying Foxes". This was a newly formed squadron, and Bishop was given the freedom to choose many of the pilots. The squadron was equipped with S.E.5a scout planes and left for Petit Synthe, France, on 22 May 1918. On 27 May, after familiarizing himself with the area and the opposition, Bishop took a solo flight to the Front. He downed a German observation plane in his first combat since August 1917, and followed with two more the next day. From 30 May to 1 June, Bishop downed six more aircraft, including German ace Paul Billik, bringing his score to 59 and reclaiming his top scoring ace title from James McCudden, who had claimed it while Bishop was in Canada, and he was now the leading Allied ace.