From Halopedia, the Halo wiki
Valiant Prudence harness
This variant of the General harness was employed by Sangheili Generals serving in the Fleet of Valiant Prudence during the Fall of Reach. It features enhanced energy shielding and a command helmet.
Following the collapse of the Covenant empire, a number of post-Covenant warlords chose to don overly complex sets of armor - looking to fill the power gap left by the collapse of the empire or to reclaim a far older sense of honor.
Jul 'Mdama's Covenant variant
The General harness is unlockable as an armor permutation for Elite characters in Halo 3, exclusively as part of Season 7: Elite. It was one of a number of Sangheili harnesses intended to appear in Halo Online.
List of appearances