Having sacked the capital city of the Kingdom of Portugal, Berengar had begun to lead the chase in the direction of the City of Porto, where he believed the hostile King had fled to. His ultimate goal was to end this war quickly. Thus, he planned to capture the King of Portugal and force his surrender.
Unfortunately, after laying siege to the City of Lisbon, the cowardly King was nowhere to be found. He had fled the City he was tasked with defending and left its people to their fate. Thus, Berengar now not only wanted to force the man to surrender, but he also desired to punish him for his dishonorable actions.
After all, if there was one thing that Berengar hated, it was a coward. A King who would leave his soldiers to be slaughtered so that he could buy some time for his escape was no king at all, at least not in the eyes of the Reichsmarschall of Austria.
