The site was surveyed by CORF, the Maginot Line's design and construction agency; Lembach was approved for construction in July 1931. The petit ouvrage was to be expanded in a second phase of construction, planned but not carried out, envisioned the addition of an 81mm mortar turret and new, separate munitions and personnelentries.
Description
Lembach comprises an entry block, two infantry blocks and one observation block. A small entry block exists near Block 1, with underground barracks and service areas along the gallery that links the combat blocks.
A series of detached casemates and infantry shelters are in the vicinity of Lembach, including
Casemate de Lembach: Casemate in close proximity to Lembach's entrance, but not connected. Single block with one JM/AC47 embrasure, one twin machine gun embrasure and a GFM cloche.
Additionally, the space between Lembach and Grand-Hohékirkel, its neighbor to the west, is filled by more than forty casemates and blockhouses along the river Schwartzbach and across the ridge to the Sauer river.
Manning
The 1940 manning of the ouvrage under the command of Captain Drouin comprised 58 men and 4 officers of the 165th Fortress Infantry Regiment. The units were under the umbrella of the 5th Army. The nearby Casernement de Lembach provided peacetime above-ground barracks and support services to Lembach and other positions in the area.
History
1940
On 19 June 1940, the German 215th Infantry Division attacked in the area immediately to the west of Lembach, between the river Schwartzbach and Lembach. Later in the day, Lembach and other ouvrages were bombed by Stukas with no significant effect. The next day an attack was repelled with artillery support from Hochwald. The German advance continued into the Vosges region, but did not directly attack Lembach. Lembach, Four-à-Chaux and Hochwald formally surrendered on 1 July 1940.
In the 1950s interest in the Maginot Line was renewed. In 1951, Lembach, Four-à-Chaux, Hochwald and Schoenenbourg were designated the Môle de Haguenau, a point of resistance against a potential invasion by forces of the Warsaw Pact. Lembach was repaired and put in a state of readiness in 1951-52. By the late 1950s interest in fixed fortifications was waning after France developed a nuclear deterrent. The money needed to maintain and upgrade the fortifications was diverted for the nuclear programs. Lembach was not manned or maintained after the early 1970s
Present condition
Lembach is privately owned and reported to be in poor condition.