The Battle of Trancoso was fought on 29 May 1385[2] between the Kingdom of Portugal and the Crown of Castile.
[3] The city of Viseu was pillaged and burned,[4] but when the Castilians were returning to Castile with their plundered loot and the prisoners they had taken, a Portuguese army met them, dismounted and assumed a defensive formation.
The Castilians exhausted themselves in attack but ended up being utterly routed,[5][6] with very high casualties among their ranks, and with six of their seven captains killed.
[7] The Portuguese released all those taken captive by the Castilians and recovered all the pillage taken from their towns.
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