From Halopedia, the Halo wiki
|FULL NAME: JOHN-117
SERVICE NUMBER: S-117
MJOLNIR MARK V INTEGRATION:
Looking at his CSV en total, my first thought is that this is fabricated. His service record reads like a career composite of three full Tier-1/L5 ODST squads, back to back for two and a half decades.
Dear God, active in 207 ground engagements and those are just the ones that we’re able to file on record. If I wasn’t on line to approve his deployment for these, again and again, I wouldn’t believe any of it.
And he’s just one of the SPARTAN-II assets we’ll have onboard, there’s 25 of them being recalled for this op, all from a multitude of theaters, some even being pulled directly from combat.
If that doesn’t scream last resort, I don’t know what does.