The UNSC soldiers were the core army of the UNSC in the Leopard Team series, there army different variants and these will be in order from rank to rank.
Normal Soldier[]
The Normal Soldiers were the most in number, but still at the default rank in the army.
Armor: Mark V Colors: Brown Weapon: Assault Rifle
Commander[]
The Commanders were the second rank a soldier can receive in the UNSC. They can give normal soldiers orders and sport CQC armor instead of Mark V.
Armor: Mark V Colors: Brown Weapon: DMR
Air Assault[]
The Air Assault Soldiers could use jet packs to "fly" if they needed to. These Soldiers are vitally important in anti gravity situations. Such as invading a Sangheili Battlecruiser or jet-packing from behind walls to make surprise attack.
Armor: Air Assault Colors: Brown Weapons: DMR, Assault Rifle.
Security[]
The Security Soldiers are not necessarily a higher rank, but more of a additional rank. The Security Soldiers were the ones responsible for any UNSC stronghold, prison, etc to be secure. You will not see them in the UNSC army but patrolling Leopard Base and the High UNSC Offices.
Armor: Security Colors: Red and Blue Weapon: DMR
Grenadier[]
The granadiers were a special unit in the UNSC.