The French had broken the bridges over the River Loire and Lancaster was forced to turn back, returning to Brittany in September.
In August 1356 Henry, Duke of Lancaster, marched south from eastern Brittany with an army of unknown size.
[5] Due to the unseasonable fullness of the River Loire,[6] across which the French had destroyed or strongly fortified all the bridges, Lancaster was unable to effect a junction.
[7] In early September he abandoned the attempt to force a crossing at Les Ponts-de-Cé and returned to Brittany.
[6] 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.