After von Richthofen's death in April 1918, "Hauptmann" Wilhelm Reinhard became JG I Commanding Officer. On 10 May JG I claimed its 300th victory while on 20 May the unit received the honorary title of "JG I 'Richthofen. Soon after JG I moved to the 7th Army front to support the forthcoming Aisne offensive, commencing on 27 May. JG I moved to Guise, and then Puiseux Ferme, operating primarily against the French and the newly arrived American Air Forces. Between 31 May and 8 June JG I claimed some 43 French aircraft and balloons, and another 24 between 24 June and 28 June. Jasta 6's Lt. Hans Kirschstein was the star performer of JG I at this time, claiming 27 victories between 18 March and 14 June.