"Barrage flights" to stop aircraft crossing the German lines were ended and airmen were ordered over the Anglo-French lines instead, to fight through to their objectives in large formations. Aircraft with more powerful engines, that could climb higher than British fighters had arrived in August and managed to photograph the battlefield. More balloon units arrived, which eventually had fifty balloons, half of those on the Western Front and all of the light motorised anti-aircraft guns in the army were sent to the Somme. Methodical observation of artillery-fire and the reforms introduced by Gallwitz, made bombardments more efficient and German infantry began to recover confidence in the air arm. On 6 October, the Imperial German Flying Corps () was reformed as the (, German Air Force).