The Franco-Castilian force was led by Bertrand du Guesclin, while Peter of Castile led a Castilian-Granadine force. The Franco-Castilians were victorious largely thanks to the enveloping tactics of du Guesclin.

After the battle, Peter fled to the castle of Montiel, where he became trapped. In an attempt to bribe Bertrand du Guesclin, Peter was lured into a trap outside his castle refuge. In the confrontation his half-brother Henry stabbed Peter multiple times. His death on 23 March 1369 marked the end of the Castilian Civil War. His victorious half-brother was crowned Henry II of Castille.

The Trastamaran dynasty begins.