On 27 May, the depleted JG II was detailed to cover the start of the Aisne Offensive with high altitude patrols against invasive Allied aircraft, ending in trench strafing. On 28 May, Rudolf Berthold returned to the air. He had acquired a new Fokker D.VII, and thought he could fly it because of its sensitive controls. He promptly scored his 29th victory while ignoring the pain of his festering arm. The success left him feeling he had gained additional control over his unit. He could now demonstrate his adherence to his iron code of combat to his pilots. He insisted that none of his pilots could turn back for engine trouble, jammed guns, or depletion of ammunition.