What distinct feature do soldier termites possess?

Soldier termites are specifically equipped with mandibles, which are their powerful jaws. These mandibles serve a critical function in the colony, primarily for defense against predators. Soldier termites do not possess wings; in fact, they are sterile and remain in their caste throughout their lives. Their primary role is to protect the queen, king, and worker termites from threats, such as ants and other predators. While other termites might have long antennae or color variations, these features are not unique to the soldier caste. The mandibles are a distinct adaptation that clearly distinguishes soldier termites from other castes, as they are not involved in foraging or reproduction, but rather in the defense of the colony.