In Brink the different character classes are very important and each class has very essential skills to being successful on both the campaign and multiplayer. The Soldier class is the brute default class as it is in most games. But this class still serves a very important function.

Soldiers are the masters of destruction in Brink. They carry HE charges for destruction objectives and carry lethal Moltovs. The major plus for them is they never run out of ammo and can dispense ammo to teammates.

As mentioned the soldier is the typical fighter, he will be leading the charge into battle. He is the main infantry and will be required to push the line as you complete objectives. Majority of his goals include supporting the more specialized classes and most of his abilities are intended to expand his combat potential.

The Soldier also has abilities that are exclusive to his character class.

Abilities

-Standard Soldier Kit
HE Charge for destruction objectives
Ammo Boxes to replenish teammates ammunition
Moltov Cocktail to create a fire ball that hurts multiple enemies.
Rank 1 Unlock

-Flashbang Grenades
Temporarily blind enemy players but teammates will only see a brief flash.
Rank 2 Unlock

-Grenade Masterkey
This ability recharges you grenade timer faster so you can throw another one sooner.
Rank 2 Unlock

-Armor Piercing Ammo
This ability upgrades the ammo you have, making it 100% effective against enemies with the Kevlar Armor Buff. Keep in mind you cannot give upgraded ammo to teammates.
Rank 2 Unlock

-Scavenger
This ability allows you to loot the dead bodies of enemies for ammo and other equipment.
Rank 2 Unlock

-Kevlar Vest
This increases your damage resistance but will still be vulnerable to soldiers with armor piercing rounds.
Rank 3 Unlocked

-Extra Magazine
This allows you to increase the total amount of ammo you can carry by an extra magazine.
Rank 3 Unlocked

-Frag Blast
Increases the blast radius of your frag grenades but not its damage.
Rank 4 Unlocked

-Grenade Damage
This does the opposite and increases the damage of your grenades but not their blast radius.
Rank 4 Unlocked

-Satchel Charges
These are remote control bombs that are plantable on any flat surface. You can place up to 3 and detonate them simultaneously or individually. Enemy fire can destroy them so planting them in the wide open can be useless.
They are similar to the pyro mines of the engineer but have a higher explosive range and can be used as a defense.
Rank 5 Unlock