Maha Chakkraphat

Maha Chakkraphat led an Ayutthayan army to attack the Burmese capital of Pegu, but the campaign failed due to logistical problems and Burmese counterattacks. The defeat weakened Ayutthaya's military position and encouraged further Burmese aggression, ultimately contributing to the fall of the kingdom.

Maha Chakkraphat refused to give two white elephants to King Bayinnaung of Burma, an act that Bayinnaung used as a casus belli for invasion. The subsequent war resulted in Ayutthaya's defeat and the loss of the elephants, which became a symbol of the kingdom's subjugation.

Maha Chakkraphat's forces were defeated by the Burmese army under King Bayinnaung, leading to the capture and sack of Ayutthaya. The kingdom became a vassal of the Toungoo Empire, and Maha Chakkraphat was taken prisoner. This event marked the first time Ayutthaya fell to a foreign power.