Battle of Mars-la-Tour
The Battle of Mars-La-Tour (also known as the Battle of Vionville or Battle of Rezonville) was fought on 16 August 1870, during the Franco-Prussian War, near the village of Mars-La-Tour in northeast France. One Prussian corps, reinforced by two more later in the day, encountered the entire French Army of the Rhine in a meeting engagement and, surprisingly, forced the Army of the Rhine to retreat toward the fortress of Metz.