Carentan is a small rural town near the north-eastern base of the French Cotentin Peninsula in Normandy in north-western France, with a population of about 6,000. It is a former commune in the Manche department. On 1 January 2016, it was merged into the new commune of Carentan-les-Marais. The town was a strategic early goal of the World War II landings as capturing the town was necessary to link the lodgements at Utah and Omaha beaches which were divided by the Douve river estuary. The town was also needed as an intermediate staging position for the capture of the cities of Cherbourg and Octeville, with the critically important port facilities in Cherbourg.

The Battle of Formigny, fought on 15 April 1450, was a major battle of the Hundred Years' War between England and France. A decisive French victory that destroyed the last significant English field army in Normandy, it paved the way for the capture of their remaining strongholds.