Flying various models of Nieuport Scout throughout his combat career, Fullard scored steadily over the next six months. He opened his victory log with two victories in May, followed by five in June. On 19 June, still only a second lieutenant, he was appointed a flight commander with the temporary rank of captain. In this role he scored more victories, with eight in July, and twelve in August. He damaged the blood vessels in one eye while flying in September, resulting in temporary blindness that grounded him for much of the month. Fullard was awarded the Military Cross and Bar in September 1917; both awards were announced in the same edition of the "London Gazette". Fullard recovered to score eleven more wins in October, and two in November, including the 8-kill ace "Leutnant" Hans Hoyer. He was also awarded the Distinguished Service Order. Two days after his 40th victory he suffered a compound fracture of the leg during a soccer match between his squadron and an infantry battalion. He did not return to duty until near the end of the war, when on 24 September 1918 he was appointed acting major.