There is no reference found of Samba participating in the great war.
Kritavarma was the head of Narayani sena and not Krishna's son Samba.
In the left foot, O monarch, was stationed Kritavarma accompanied by the Narayana troops, and those invincible warriors, the gopalas. In the right foot, O king, was Gotama's son of prowess incapable of being baffled, surrounded by those mighty bowmen viz., the Trigartas and by the Southerners. In the left hind-foot was stationed Shalya with a large force raised in the country of Madras. In the right (hind-foot), O monarch, was Sushena of true vows, surrounded by a 1,000 cars and 300 elephants. In the tail were the two royal brothers of mighty energy, viz., Citra and Citrasena surrounded by a large force. [Karna Parva]
In fact after 36 years from the war, Samba was killed in an internal fight among the Yadava-s clan which was intoxicated with power and wine. Other sons of Krishna were also killed:
Knowing that the hour of destruction had come, the mighty-armed Keshava stood there, eyeing everything. Indeed, the slayer of Madhu stood, raising a bolt of iron formed of a blade of grass. Beholding that Samva was slain, as also Charudeshna and Pradyumna and Aniruddha, Madhava became filled with rage. [Mausala Parva]