During the Franco-Prussian War, he took part in the Battle of Spichern, occupied Forbach on August 7 and fought in the Battle of Borny–Colombey and the Battle of Gravelotte as well as in many small battles before Metz, until he was on October 3 was appointed to the head of the grand ducal division of Baden. Glümer, who was ill, was only able to take command in Dijon on December 9 and already delivered in the victorious Battle of Nuits Saint Georges on December 18. In the Battle of the Lisaine, Glümer was in command at Montbéliardand and held this unfavorable position against all enemy attacks. For his achievements, Glümer was awarded both classes of the Iron Cross. In addition, he received on January 28, 1871, the Commander First Class of the Military Karl-Friedrich Merit Order and on February 5, 1871, the Pour le Mérite.