 Lautaro secretly remained true to his own people and rejoined them to show Caupolicán a means by which Valdivia could be defeated.Toward the end of 1553, the Araucanians under Lautaro revolted and they fell on the over-extended Spanish forces in the south.One of the first signs that a big rebellion was building was the attack on the fort at Tucapel, where they managed to destroy the fortress on December 2, 1553.