^pics
Never really noticed this class of UNSC destroyer before. From all accounts, it appears to be the predecessor of the "Thanatos" class. I think it'd be a great addition for the mod as a militia unit. Lorewise it makes sense too, as the planetary militias could've acquired some of these ships after the UNSC phased them out of service.
Background Info:
"The CMA Heracles was a UNSC-built destroyer used by the Colonial Military Administration.[1] The Heracles was commanded by Captain Maribeau Veredi. It served as the lead ship of Battlegroup 4.
On October 7, 2525, the Heracles, along with the rest of Battlegroup 4, the Arabia and the Vostok, was sent into the Epsilon Indi system to discover why the Colonial Administration Authority had lost contact with the colony world Harvest and the scout ship Argo, which had been dispatched six months earlier with the same objective. The crew discovered that the planet had been destroyed and that the Argo was missing; it immediately encountered a Covenant vessel in orbit. After a brief exchange of fire, the Arabia and the Vostok were destroyed and the Heracles was forced to retreat. Due to the extensive damage it had taken during the skirmish, the Heracles took several weeks to return to Reach.[2] The ship was repaired at Reach, and later returned to reclaim Harvest as part of Vice Admiral Preston Cole's battlefleet.[3][4]"
source: http://www.halopedia.org/CMA_Heracles