The Watchers are a subdivision of the Prosperan Marines, and act as a special forces battalion utilized in covert operations across the Republic. While technically a division of the Marines, they typically report to the Prosperan Navy instead.
Watcher doctrine is defined by its use of experimental and rare military technology to complete operations in a covert and subtle way; often utilizing cloaking technology, disguises, and long ranged weaponry. Unlike the rest of the Marines, the Watchers almost always operate on planets rather than on ships. However, they do have teams designed for this purpose as well.
The de jure leader of the Watchers is Mikhail, who administrates the division and provides technology. There are no more than around forty thousand members of the Watchers at any one time.