The 42nd Division earned a few weeks rest, returning to the line for the Battle of Saint-Mihiel on 12 September 1918. The Allied advance proceeded rapidly and MacArthur was awarded a fifth Silver Star for his leadership of the 84th Infantry Brigade. He received a sixth Silver Star for his participation in a raid on the night of 25–26 September. The 42nd Division was relieved on the night of 30 September and moved to the Argonne sector where it relieved the 1st Division on the night of 11 October. On a reconnaissance the next day, MacArthur was gassed again, earning a second Wound Chevron.