Final answer:
The soldiers who keep Radulph from killing Nic in the arena wear a variety of protective gear on their arms, including shields and helmets with different designs.
Step-by-step explanation:
The soldiers who keep Radulph from killing Nic in the arena are wearing a variety of protective gear on their arms. Some soldiers wear round shields and spears, while others have knapsacks attached to their spears, suggesting they travel long distances to battle. One side of the soldiers wear helmets ornamented with horns, while the other side wears hedgehog-style helmets. It is important to note that the exact appearance of the soldiers may vary depending on the specific historical context being depicted.