Gibb landed in Normandy at the beginning of June 1944 and received his second Legion of Merit for his part in the Battle of Normandy. He was relieved by lieutenant colonel Clarence E. Beck and subsequently succeeded Colonel George A. Taylor as commanding officer of 16th Infantry Regiment and led his regiment during the battles of Hürtgen Forest, the Bulge and Remagen. He received Silver Star for his service with 16th Infantry Regiment in France, Belgium and Germany and also was decorated by the Governments of France and Belgium.