Marshall won recognition and acclaim for his planning of the attack for the Battle of Cantigny, which took place from May 28 to 31, 1918; its success resulted in the first notable American victory of the war. On May 26, Marshall was injured while traveling to several subordinate units to conduct pre-attack coordination. As he departed the division headquarters area, his horse stumbled, fell, and rolled over; Marshall's left foot was caught in the stirrup, and he sustained a severe sprain and bruise. A physician bound Marshall's injured ankle and foot with adhesive tape so that he could avoid medical evacuation and remain with the division to oversee the Cantigny attack. Marshall was awarded the Citation Star for his heroism during this battle. When the Silver Star medal was created in 1932, Citation Stars were converted to the new award.