Lancaster's Loire campaign of 1356

Lancaster's Loire campaign was the march south from Brittany in August 1356 by an English army led by Henry, Duke of Lancaster. He was attempting to join the army of Edward, the Black Prince, near Tours. The French had broken the bridges over the River Loire and Lancaster was forced to turn back, returning to Brittany in September.

Chevauchée
In August 1356 Henry, Duke of Lancaster, marched south from eastern Brittany with an army of unknown size. It took the form of a large-scale mounted raid (a chevauchée). It was his intention to join the army of Edward, the Black Prince, the eldest son of the English king, Edward III. This had marched north from Bergerac on the 4th of August. It was planned that the two would meet in the general vicinity of Tours. Lancaster brought with him from Normandy 2,500 men. He also had under his command over 2,000 men garrisoning the English-held fortifications of Brittany. The extent to which he added the men from these garrisons to the troops he brought with him is not known.



Due to the unseasonable fullness of the River Loire, across which the French had destroyed or strongly fortified all the bridges, Lancaster was unable to effect a junction. In early September he abandoned the attempt to force a crossing at Les Ponts-de-Cé and returned to Brittany. En route he captured and garrisoned a substantial number of French strongpoints. Once in Brittany he laid siege to its capital, Rennes.

The Prince also returned towards his starting point, but his delay waiting for Lancaster near Tours enabled a French army under the command of their king, John II to overtake him. As a result, the Prince was forced to commit to the Battle of Poitiers, where the French were heavily defeated.