The Warrior caste was the military caste of the Yuuzhan Vong.
The second largest caste in Yuuzhan Vong society and consisting of only males, the warriors were conditioned from birth to be brave, fierce, and merciless in battle against the "Infidels"—as well as their fellow Warriors. The warriors were, naturally, the most aggressive of the Yuuzhan Vong castes, but also the most self-important, feeling that all others were beneath their notice (particularly the Intendant caste) though this actually would work against them. This meant challenges were often made against their enemies and they saw the refusal of a challenge being considered a disgrace on all Yuuzhan Vong.
Surrender was not an option for the Warrior caste, and to retreat was a sign of cowardice. If a Warrior was captured, they would immediately commit suicide, rather than shame themselves or their Domain. For warriors, there was only victory or death. They often respected courage and resistance from their foes which meant the more challenging battles only incited them more so in combat.
In honor of Yun-Yammka, the Slayer and their patron deity, the Warriors would sacrifice body parts, scar, and tattoo themselves, to show Yun-Yammka their pain was in honor of him. Warriors, were trained from birth, to know no fear, show no mercy, and to follow their superior's orders without question.The highest rank among the Warriors was the Warmaster, and the number two member of the Yuuzhan Vong's entire society. The Supreme Overlord was guarded by a special group of warriors called the Slayers. Another elite group was called the Hunters, who were given missions that normal Warriors could not complete. Some of the most experienced Chazrach were allowed to enter the lower levels of the Warrior caste.
After the failure of the Praetorite Vong in gaining a foothold in the galaxy, the warrior caste of the Yuuzhan Vong Empire was dispatched to pacify the regions in the invasion corridor. These actions were at first spearheaded by Shedao Shai until his death at the Battle of Ithor.
As the war continued, Lando Calrissian's YVH 1 Battle Droids, were programmed with a unique battle cry "We are machines! We are greater than the Yuuzhan Vong!" This was a very powerful insult, considering the Vong's hate of technology, and xenophobia. Upon hearing this battle cry, the Vong Warriors would often be whipped into a frenzy of rage and would attack the Droids.
The fanatical nature of the warrior caste was turned against them during the Fall of Coruscant with Supreme Overlord Shimrra Jamaane as well as Admiral Ackbar noting independently estimated that one third of the Warriors had been killed in two to three years of fighting.
Most of the Warriors killed themselves after the death of Shimrra, though some went to Zonama Sekot. Two were present and guarded the Master Shaper in charge of the Ossus Project as well as guarded Jedi relics from thieves.
In addition, their were some unofficial ranks as well