On the last night of the war after Duryodhana's defeat, Ashwatthama attacked the Pandava camp and strangled Dhrishtadyumna to death in his sleep, he killed Shikhandi and Uttamaujas , He killed Draupadi's five sons, the Upapandavas, while they were sleeping, believing them to be the five Pandava brothers and many other prominent warriors of the Pandava army.
So who was Uttamaujas ?