Covenant fleet

A fleet is the basic organization of ships in the Covenant military. Each fleet is essentially a fully-rounded armada, likely with dedicated logistical support. Each fleet is given a unique name with religious connotations similar to how Covenant vessels and colony worlds are named by their beliefs.

Overview
The title of the fleet commander varies depending on the size and extension of the fleet itself. While smaller fleets or temporary task forces are led by Fleet Masters, larger fleets are commanded by Supreme Commanders. There are also cases where an individual with the title of Shipmaster has had command of a fleet. A fleet's highest-ranking individuals convene in a group known as Council of Masters. In some cases, a Minor Prophet is attached to a fleet as a representative of the High Council.

Many known fleets seem to consist of around one hundred starships of all types and variations, and are led by a prominent flagship, which is often an assault carrier or in rare cases a supercarrier. Capital ships, such as the iconic CCS-class battlecruisers, as well as numerous frigates and destroyers, usually serve as escorts to the flagship. Fleets are sustained by numerous logistics vessels, such as agricultural support ships, which are organizationally attached to warship fleets, providing food and supplies.

A number of combat legions are often attached to a given Covenant fleet, stationed aboard the various warships available.

Combined fleets
A combined fleet, as its name implies, is comprised of multiple smaller fleets and is led by a Supreme Commander, or, if of sufficient size, an Imperial Admiral. These fleets have larger duties, such as safeguarding and policing entire regions of Covenant-controlled space on their own. These fleets can have several hundred ships. High Charity was guarded by a combined fleet at all times. Some combined fleets are formed on a strictly temporary, task-oriented basis, such as a major invasion of a key enemy system.