uttahadhi
In 1592, Nanda Bayin ordered his son to attack Ayutthaya again.During the battle, the elephants of Naresuan and Ekathotsarot went mad and ran into the midst of the Burmese.
The personal battle between Naresuan and Minchit Sra was a historical scene as known as Yuttahadhi, the Elephant battle. After narrowly missing Naresuan and cutting his hat (on display in Bangkok) Minchit Sra was slashed to death on the back of his elephant. This was on Monday, the 2nd waning day of the 2nd month of the Buddhist calendar Chulasakarat Era year 954. Calculated to correspond to Monday, 18 January, AD 1593 of the Gregorian calendar, this date is now observed as Royal Thai Armed Forces day. Naresuan then built a pagoda on the site of Yutthahadhi as a victory monument. However, modern historians are still unable to locate the pagoda.
Naresuan intended to execute all the soldiers in the battle of Nong Sarai who had provided no support to him and his brother. Somdet Phra Wannarat - a bhikkhu - calmed Naresuan to get him to lift the punishment. Naresuan then instead ordered them to take Tavoy and Tenasserim.