Spartan V Project (Project Sirius)

Project Sirius was the codename for the Spartan V (SV) program.

History
In 2605, one Spartan remains, a Spartan II, designation John-177. The Chief, now quite old, realized the relentlessness of the Covenant has grown since he was last in serious combat."They are more forceful, more relentless and hellbent on exterminating the human race. Marines may not be enough, we need Spartans."

- Master Chief The Chief pitched a farfetched plan to the UNSC high command for a new Spartan program, codename Sirius. When questioned abot this, the Chief replied with:"I know we have not relied on Spartans for decades. Yes, we could simply rehire the remaining Spartan IVs, but these damn Covenant have grown in power exponentially. We need stronger Spartans than ever produced."

- Master Chief After careful consideration, the UNSC started development on new Spartans thay were faster and stroger than ever before. Spartan Vs wearing extensively upgraded Mjolnir Gen 2 armor were activated in 2615, and were upgraded to Mjolnir Gen 3 in 2617, with those augmented afterward wearing Gen 3.