On June 28, 1917, Bullard was promoted to corporal. On August 27, he was assigned to Escadrille N.93 (), based at Beauzée-sur-Aire south of Verdun, where he stayed until September 13. The squadron was equipped with Nieuport and Spad aircraft that displayed a flying stork as the squadron insignia. Bullard's service record also includes Squadron N.85 (), September 13, 1917 – November 11, 1917, which had a bull insignia. He took part in over twenty combat missions, and he is sometimes credited with shooting down one or two German aircraft (sources differ). However, the French authorities could not confirm Bullard's victories.