 When Almogavars deployed throughout the border, it was very difficult for any potential enemy to pass, unless it was a large contingent of troops or someone who knew the area very well and passed through fields at night.In April 1309, when the war between Castile and Granada had already begun and before the Crown of Aragon also declared war on Granada, the roads of the kingdom of Murcia were so full of Almogavars that Pedro López de Ayala, who ruled the kingdom, advised against the move of the ambassadors of the king of Granada returning from the court of James II, saying that they would surely be captured, even if they had a guide.Almogavars also used to work for intelligence services and surveillance, which depended on the municipalities or the royal officers, and were vital to the defense of the border with the Saracens.