Battle of the Andalusian Plains
Since the victory and seizure of the province known as Murcia, the Granadans have been busy defending their borders from the Iberian Union's attacks. They were not as well prepared for a full-scale invasion of Iberia as they thought they were.
The first few battles they fought showed a severe lack of discipline in their ranks compared to Berengar's troops. The reason for this was simple, the Austrian military attache had not drilled the Granadans as hard as they would their own troops, nor did they put them through specialized training.
As such, after Hasan had returned to Granada to engage in hedonistic activity, the Royal Granadan Army was left in the hands of General Ziyad Ibn Ya'is, who was far more competent on military matters than the young Sultan.