The Allied siege of La Rochelle occurred during the Second World War in 1944–45, when Allied troops invaded France. La Rochelle was an important German naval base on the Atlantic for surface ships and submarines, from which U-boat campaigns were launched.
La Rochelle and other harbours such as Royan and Saint-Nazaire, became "Atlantic pockets" still occupied by the Germans, which were bypassed by the main thrust of the Allied invasion, as was Dunkirk on the North Sea. The city was liberated only at the very end of the war, nine months after the Liberation of Paris, after the general German capitulation on 8 May 1945.
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