As part of the Yuuzhan Vong's warrior caste, a subaltern held a specific rank. Their roles were similar to that of sergeants or lieutenants; they led warrior squads in combat scenarios or managed troops assigned to guard particular sites.
Nas Choka, the Supreme Commander, himself supervised the promotion of four subalterns. Specifically, Subalterns Doshao, Sata'ak, Harmae, and Tugorn played roles in the triumph over the New Republic on Dantooine, the assault targeting Ithor, the capture of individuals at Obroa-skai, and Tugorn was key in planting Belkadan, alongside his involvement in the overwhelming victory within the Gyndine system.
During the Battle of New Holgha, Subaltern Bur'lorr fought, but a group of Mandalorian commandos attacked him, and he was killed when Goran Beviin's crushgaunts crushed his windpipe. In the later period of the Yuuzhan Vong War, S'yito was a subaltern who was positioned on Selvaris.