Ouvrage Lembach is a petit ouvrage of the Maginot Line. Lembach is adjoined by petit ouvrage Grand Hohekirkel at some distance to its west and gros ouvrage Four-à-Chaux immediately to its east. It faces the German frontier, and was part of the Fortified Sector of the Vosges. During the Battle of France in 1940, the German 215th Infantry Division broke through the line of smaller fortifications to the west of Lembach, but did not directly attack. After aerial bombardments, Lembach surrendered with the rest of the Maginot fortifications according to the terms of the Second Armistice at Compiègne. After the war Lembach was renovated for further use, but was abandoned by the 1970s.