Which rank uses a Silver Eagle as their collar device?

The rank that uses a Silver Eagle as their collar device is Captain. In the military, specifically within the Navy ranks, a Captain is a senior officer, typically commanding a ship, submarine, or aviation squadron. The Silver Eagle symbolizes authority and leadership, reflecting the responsibilities a Captain carries.

In contrast, other ranks have different insignias that represent their respective positions. For instance, Rear Admiral Lower Half uses a gold star, Lieutenant Commander is represented by a silver leaf, and Chief Warrant Officer has a unique insignia that differs from the silver eagle. Understanding these distinctions is important when identifying ranks and their roles within the military hierarchy.