As Commanding Officer, Huffer led the 93rd Aero Squadron during the Saint Mihiel and Meuse-Argonne offensives in the fall of 1918. Operating as part of the 1st Pursuit Wing, the 93rd provided air superiority over the battlefield by ensuring the protection of friendly bomber and reconnaissance aircraft, destroying German fighters and reconnaissance aircraft and balloons, and providing direct support to ground troops. Inclement weather mitigated much of the support provided by the 1st Pursuit Wing during the Saint-Mihiel offensive until 14 September. The 93rd, however, was severely hampered by a lack of both experience and material throughout the Saint-Mihiel offensive, a situation that would continue until the Meuse-Argonne offensive and the armistice, though the squadron was nevertheless able to account for eight confirmed kills during the Saint-Mihiel offensive.