While Naresuan prepares for the war, he realizes that the soldiers in the army of Ayutthaya are outnumbered by the two armies of Burma, so he decides to fight with each army separately before the two armies come together. First he fights with army of Lord Pathein west of Ayutthaya and he wins this first battle.
Naresuan, preparing for war, realizes that the Burmese forces are larger than his own. He chooses to fight the two Burmese armies separately before they combine.  He first defeats the army led by Lord Pathein in a western location near Ayutthaya.