The Battle of Conquereuil was fought in 992 AD between the Bretons under Duke Conan I of Rennes and the Angevins under Duke Fulk the Black. The Bretons defended, and Conan carefully prepared the battlefield, digging pits and ditches which were flooded by the water of nearby swamps and then hidden by covering them lightly with sod, and behind this prepared earthworks which had their flanks secured by the swamps. Breton can refer to: The Breton language A person from Brittany Author André Breton This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Conan I of Rennes (927 - June 27 992), was count of Rennes and duke of Brittany, from 990 to his death. ... Angevin is the name applied to two distinct medieval dynasties which originated as counts (from 1360, dukes) of the western French province of Anjou (of which angevin is the adjectival form), but later came to rule far greater areas including England, Hungary and Poland (see Angevin Empire). ... Fulk III (972 – 21 June 1040), called Nerra (that is, le Noir, the Black) after his death, was Count of Anjou from 21 July 987 to his death. ...

The Angevins attacked, and Breton troops lured the Angevin knights into the flooded pits by feigning flight. The Bretons then counterattacked and drove the Angevins back in disarray. During a lull in the battle, during which the Bretons apparently prematurely considered the battle won, Fulk reorganized his army, attacked the Bretons again, and routed them, killing Conan in the process.