Esteem
From Halopedia, the Halo wiki
The Esteem is a CPV-class Covenant Destroyer. During several promotional transmissions featured on Bungie's website, the Esteem sent a message to the Pillar of Autumn. It is beleived that it was part of the battle at Installation 04 and thus the battle of Reach.
Message
• CPV Esteem (DE H c-10)
- SCS Pillar of Autumn
- RECEIVED (trans) 04.2.7.1139
- via x-process 02988.2.32.738288
- (process owner BW - AI - Class III)
You will not know where we have struck until you have fallen.