User:XW3 AR3 L3GION/Third Sierra Regiment

"Ad Honorem"

- Motto of the Third Regiment.

The Third Sierra Regiment is a special operatives regiment consisting entirely of SPARTAN-IV supersoldiers deployed before and during the Doisac War. The Regiment consisted of three thousand S-IV soldiers and was part of the Fourth Sierra Battalion along with its sister regiments: First Sierra Regiment, Second Sierra Regiment and the Fourth Sierra Regiment.