Fall of Guardia
The Fall of Guardia is an event in Chrono Trigger, occurring in the year 1005 A.D. Subsequent to Lavos' death at the hands of time-travelers, the Kingdom of Guardia was invaded by the Porrean military. Dalton reportedly led the assault, transported to the Present by a lingering Gate. The famed Masamune was lost in the altercation.
In the PlayStation release of the game, an end-game cutscene depicted soldiers dueling with swords in Guardia Castle, flame and destruction in the city of Truce, and an unknown presence pulling the abandoned Masamune from the ground.