On 15 July 1918, the Germans launched another offensive. JG III supported 7th Armee, and in turn was supported by JG I. As 7th Armee was the first to attack, it saw heavy fighting. JG III was now equipped with Fokker D.VIIs equipped with parachutes, but it faced opposition from an array of French, American, and British squadrons. Despite excessive heat and rainy weather, air activity over the battlefield was brisk. An armada of 225 French bombers struck German pontoon bridges crossing the Marne River, dropping 40 tons of bombs. By nightfall, JG III had downed seven enemy planes.