The First Battle of the Marne is best remembered for the approximately six hundred Parisian taxicabs, mainly Renault AG’s, commandeered by French authorities and used to transport six thousand French reserve infantry troops to the battle. Their arrival has traditionally been described as critical in stopping a possible German breakthrough against the Sixth Army. Today, some historians question their real impact. Their impact on morale, however, is undeniable: the taxis de la Marne were perceived as a manifestation of the union sacrée of the French civilian population and its soldiers at the front, reminiscent of the people in arms who had saved the French Republic in 1794. Over two million men fought in the First Battle of the Marne, of whom more than 500,000 were killed or wounded. It is one of the famous "Marne Taxis" used to transport French troops to the Battle of the Marne in September 1914.