From Halopedia, the Halo wiki
Dragoons were a form of first-order Forerunner navy warships. Used from the earliest interstellar expansion by the Forerunners, dragoons were used by the Ecumene for initiating long-ranged strikes and raiding. Dragoons were accompanied by vast entourages of weapon-ships and combat Sentinels.
A notable class of dragoon was the Sojourner-class dreadnought, also described as a prime dragoon for its pinnacle Forerunner technologies and effectiveness. It was introduced shortly before containment efforts against the Flood began, and continued to fight in all major engagments of the Flood war. The Skirr-class battlecruiser was another classification of dragoon employed by the Forerunners during the High Ecumene era.
- Halo Waypoint, The New Halo Encyclopedia is Out Today: "DRAGOON - First-order Forerunner capital ship used for initiating long-range strikes and raiding." (Retrieved on May 15, 2022) [archive]
- Halo: Warfleet, page 80-81