Answer:
The vast German and French armies that then confronted each other were each grouped into right and left wings. After suffering a check at the Battle of Wörth on August 6, 1870, the commander of the French right (south) wing, Marshal Patrice Mac-Mahon, retreated westward. That same day, about 40 miles (65 km) to the northeast, the commander of the French left wing, Marshal Achille Bazaine, was dislodged from near Saarbrücken and fell back westward to the fortress of Metz. His further retreat was checked by the German right wing in the blundering Battles of Mars-la-Tour and Gravelotte on August 16 and 18, respectively, and he then took refuge behind the defenses of Metz indefinitely.
Explanation:n
