The Soldier is pretty much an all-purpose player. With decent speed, weapons and armor, you can use this class in about any situation, from offensive attacks to flag escort to defensive support.
The Soldier's main weapon, the Rocket Launcher, is excellent for clearing routes for flag carriers, and also good for sniper removal - sniper decks and rooftops are provide no sanctuary from well-placed rocket shots. Just remember, there's no guided rocket option in TFC, so make your shots accurate.
For in-close combat, the Soldier carries both the single and double-barrelled shotguns. He also carries the Nail Grenade, which will spin and shoot out nails at anyone near it for a few seconds until it eventually explodes, making his one of the most well-rounded arsenals in the game.
Weapons: Single, Double-Barreled Shotguns, Rocket Launcher, Crowbar
Grenades: Hand Grenades, Nail Grenades
Speed: Slow
Health / Armor: 100 / 100 (max armor 200)
Special Skill: Reloads current weapon
Position: All-purpose offensive and defensive support, flag carrier on occasion.