Falaise Pocket

The Falaise Pocket or Battle of the Falaise Pocket (12–21 August 1944) was the decisive engagement of the Battle of Normandy in the Second World War. A pocket was formed around Falaise, Calvados, in which the German Army Group B, with the 7th Army and the Fifth Panzer Army (formerly Panzergruppe West) were encircled by the Western Allies. The battle is also referred to as the Battle of the Falaise Gap (after the corridor which the Germans sought to maintain to allow their escape), the Chambois Pocket, the Falaise-Chambois Pocket, the Argentan–Falaise Pocket or the Trun–Chambois Gap. The battle resulted in the destruction of most of Army Group B west of the Seine river, which opened the way to Paris and the Franco-German border for the Allied armies.

Following Operation Cobra, the American breakout from the Normandy beachhead, rapid advances were made to the south and southeast by the Third U.S. Army under the command of General George Patton. Despite lacking the resources to defeat the U.S. breakthrough and simultaneous British and Canadian offensives south of Caumont and Caen, Field Marshal Günther von Kluge, the commander of Army Group B, was not permitted by Adolf Hitler to withdraw but was ordered to conduct a counter-offensive at Mortain against the U.S. breakthrough. Four depleted panzer divisions were not enough to defeat the First U.S. Army. Operation Lüttich was a disaster, which drove the Germans deeper into the Allied envelopment.