Battle of La Roche-Derrien

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Battle of La Roche-Derrien
Part of the War of the Breton Succession
Charles de Blois, Duke of Brittany, is taken prisoner after the battle of La Roche-Derrien
Date 1347, during the night Location La Roche-Derrien, France Result Anglo-Breton victory
Belligerents
House of Montfort, Brittany Kingdom of England	House of Blois, Brittany Kingdom of France
Commanders and leaders
Thomas Dagworth	Charles of Blois  (POW)
Strength
1,000	4,000-5,000
Casualties and losses
Unknown	Unknown

The Battle of La Roche-Derrien was one of the battles of the Breton War of Succession; it was fought on 20 June 1347 during the night between Anglo-Breton and Franco-Breton forces. Approximately 4,000–5,000 French, Breton and Genoese mercenaries (the largest field army ever assembled by Charles of Blois) laid siege to the town of La Roche-Derrien in the hope of luring Sir Thomas Dagworth, the commander of the only standing English field army in Brittany at the time, into an open pitched battle.