独仏休戦協定
On the 21st the Germans] attacked Einseling, which was more fortunate, as it was within range of Laudrefang's 81mm mortars, the only such weapons in the sector. Einseling benefitted as well from a French ruse. French soldiers occupied nearby interval casemates at night, convincing the Germans that the casemates, which were evacuated by day, still harbored combat teams. The Germans divided their fire between the casemates and the "ouvrage". Laudrefang's fire, along with accurate fire from Einseling's lighter weapons, broke up a German artillery attack. The defense was supported by the Quatre-Vents Nord casemate, which had been re-occupied by French teams. The "ouvrage" survived until the Second Armistice at Compiègne took effect on 25 June, when it surrendered. Téting fared similarly. After a disorderly German retreat the infantry attacks were suspended in favor of an artillery barrage at Laudrefang, firing between 3000 and 3500 rounds at the "ouvrage". Compared to other German attacks on other "ouvrages", the bombardment of Laudrefang was relatively ineffectual. While the concrete structure was badly damaged, it was not perforated, and the mortar turrets and cloches were not hit. The "ouvrage" survived until the Second Armistice at Compiègne took effect on 25 June, when it surrendered. The machine gun turret at Block 3 was used for testing of shaped-charge munitions.