Template:Ratings Deacon is a Covenant rank. As the name suggests, a Deacon is used for religious reasons rather than combat. A Deacon is sent to help reinforce the spirituality of ships in which not much is present.
Known Deacons
Deacons are not mentioned in any game but are only in Halo: Contact Harvest. The Grunt Dadab is the only known Deacon. However, there are presumed to be many more, due to Dadab mentioning the group he had studied with to gain the rank.