Second Armistice at Compiègne
On the 21st a large-scale attack was opened against Welschhof, which was interrupted by fire from Simserhof. Haut-Poirier, farther to the west and out of range of Simserhof, was forced to surrender. Further firing occurred on the 22nd and 23rd, while individual casemates were assaulted by the Germans and taken. Both Rohrbach and Simserhof continued to fire back at the Germans on the 24th, ceasing fire at midnight in accordance with the terms of the Second Armistice at Compiègne. The garrison formally surrendered on 30 June.