Satyeṣu
Satyeṣu was a Kaurava warrior who fought in the Kurukṣetra war. Arjuna killed him on the eighteenth and last day of the battle. This was when the Kaurava army was falling apart under the command of Śalya.
His death on the eighteenth day
Satyeṣu was one of the Kaurava warriors still fighting on the eighteenth day. Arjuna killed him as the last Kaurava resistance broke down on that day. On the same day Arjuna also killed Satyakarman, and Suśarman of the Trigartas.
Sources
- Mahābhārata, Śalya Parva, Chapter 27