The battle of the Mons pocket was an engagement fought between Allied and German forces during late August and early September 1944. It formed part of the final stages of the rapid Allied advance across France and Belgium. During the battle United States Army forces, assisted by the Belgian Resistance, encircled a large number of retreating German Army and Waffen-SS troops near the town of Mons in Belgium. The German forces were disorganised and unable to counter the Allied forces. Around 25,000 Germans were made prisoner of war.