Covenant army
From Halopedia, the Halo wiki
The Covenant Army is a branch of the Covenant Military responsible for land-based operations. It is the primary invasion force, and houses the numerous Special Operations units. [1]
Function
The Covenant Army comprises of the majority of the Covenant's ground-based units, and is asked with engaging the enemies of the Covenant in ground and air combat, using a variety of equipment and weaponry. Primarily led by the Brutes, and formerly by the Elites, the Army is comprised of most of the military-service races who act as infantry or, in the case of Hunters, as demolitions experts and shock troops.
Because Prophets do not hold military ranks, no Prophet is truly a "member" of the Army. Instead, they command its Brute leaders, who follow their orders and accomplish their objectives. Engineers, as primarily non-combatants, are also exempt from the Army.
Species In The Covenant Army
Pre Civil War
Post and During Civil War
Covenant Civil War
During the Covenant Civil War, or "Great Schism", the Army was split in two, Loyalists supporting the Prophets, and Separatists supporting the Arbiter.
During the Covenant Civil War, a significant majority of the [[Hunters, and a number of Grunts, defected to the Covenant Separatists, though they are never seen in Halo 3. Most Grunts, some Hunters, and the Jackals, Drones and Brutes remained in Covenant Loyalist military service.