Pedro Alvarado led the first incursion to extend their dominion to the domain of Cuzcatlan in June 1524. When he arrived at the borders of the kingdom, he saw that civilians had been evacuated. Cuzcatlec warriors moved to the coastal city of Acajutla and waited for Alvarado and his forces. Alvarado approached, confident that the result would be similar to what occurred in Mexico and Guatemala. He thought he would easily deal this new indigenous force since the Mexican allies on his side and the Pipil spoke a similar language.