Star Wars: Battlefront II/Weapons

Infantry
The basic infantry units in this game are the Clone Trooper, the Super Battle Droid, the Stormtrooper, and the Rebel Trooper. Good for taking Command Posts and mid range combat.

Primary
Blaster rifle/Wrist blaster

These weapons lose accuracy the longer you fire them. After about 25 rounds or so your shots will start flying wildly off target, so fire them in shorter bursts (10-15 rounds) to keep your aim steady at mid-long range.

Rebel Soldier: more accurate, but less damage

Stormtrooper: more damage and highest rate of fire, but very inaccurate

Clone Trooper: faster rate of fire, but less damage

Super Battle Droid: high damage, but slow rate of fire

Blaster Pistol/Tri Shot

Super Battle Droid: 3 bolts of energy shot at the same time like a shotgun. Deals high damage and can usually kill a standard trooper in one well-placed blast. Actually has a fairly tight spread, making it useful at close-mid range as well. Overheats in 3 bursts.

All others: Deals less damage than your rifle, but still good when your main weapon is out of ammo or for placing accurate shots at long range (since it doesn't suffer from accuracy loss through sustained fire). Overheats in 8-10 rounds.

Secondary
Thermal Detonator

All- Good against a vehicle or clusters of enemies. Will stick to a vehicle if the grenade hits it directly. Big explosions are always helpful for you.

Vanguard
The Vanguard Trooper is the main Missile Trooper in the game. They include the Heavy Trooper, the Assault Droid, the Rebel Vanguard, and the Shock Trooper. Very popular in online matches because of their powerful weapons. Suited for anti-vehicular combat, but fares fine against some infantry with its fearsome explosives.

Primary
Rocket Launcher

All- High damage, good against vehicles. Locking onto a vehicle and waiting for the inner crosshair to turn red will cause the rocket to track the target. Faster vehicles such as STAP and speeder bikes can outrun or avoid a homing rocket but against a tank or a walker these are pretty much a guaranteed hit. You can also use this to curve a rocket around a corner or other cover to fire at the vehicle from safety. Direct hit can kill any infantry (except Droidekas with shields).

Blaster Pistol

All- When you run out of ammo (which may happen quickly), this is a good thing to have. 8-10 shots per overheat.

Secondary
Thermal Detonators

All- Good against vehicles or clusters of infantry.

Mines

All- Great against vehicles or infantry. AI will usually run over a mine, giving a quick kill. 1 hit kill for infantry, a few more for larger vehicles like the AT-AT. Enemy engineers can walk over mines without setting them off (but other non-engineer units near them can still set off the mine, causing them to take the explosion regardless).

Sniper
The Sniper Class Troopers focus on the use of sniper rifles and rely on being far away and out of harm distance. They are the Assassin Droid, the Clone Sharpshooter, the Scout Trooper and the Rebel Marksman. During the Clone Wars era, Clone Sharpshooters targets are mostly Super Battle Droids. To archive a headshot on this specific CIS unit, the Sharpshooter must aim and hit directly at the droids lowered head. The only unit where the headshot is not possible, is the Droideka.

Primary
Sniper Rifle

Blaster pistol

Secondary
Thermal Detonator

Auto Turret

Engineer
Engineer units are mainly used for the shotgun, and for that they are the only ground units capable of slicing into vehicles, fixing medical and ammo droids, dispensing health and ammo restoratives, and constructing turrets with the use of their fusion cutters. These units are the Engineer Droid, the Clone Engineer, the Rebel Smuggler and the Imperial Engineer.

Primary
Shotgun

Fusion Cutter

Secondary
Detpack

Health & Ammo Dispenser

Commander
The Commander and Elite classes have weapons that vary from faction to faction. The Commander Class has the most powerful weapons, and are the only ones that can cast "spells" which either helps you or hurts the enemy. Units are the Clone Commander, the Imperial Officer, the Bothan Spy and the Magna-Guard.

Republic
Primary: Chain gun, Blaster Pistol

Secondary: Rally (decrease damage taken by 50%), Remote Droid

CIS
Primary: Bulldog RLR, Radiation Launcher

Secondary: Neuro Poison (decreases enemy health over time), Recon Droid

Rebel Alliance
Primary: Incinerator, Stealth

Secondary: Regeneration (nearby friendly units regain lost health over time), time bomb

Empire
Primary:Sonic Gun, Mortar Launcher

Secondary: Rage (damage increased by 50%), Remote Droid

Elite
Elite Troopers all have unique and powerful weapons, most of which can be charged or have an area of effect; the Droideka can even cast a shield. All have a special effect, including flight, high health and shield casting. The elite class is made up of Droidekas, Jet Troopers, Dark Troopers, and Wookiee Warriors.

Republic
Primary: EMP Launcher, Commando Pistol

Secondary: Thermal Detonators

Special Ability: Flight

CIS
Primary: Repeating Blasters

Secondary: Shield Emitter

Special Ability: Shielding

Rebel Alliance
Primary: Bowcaster (chargeable), Grenade Launcher

Secondary: Thermal Detonators, Remote Droid

Special Ability: Highest non hero Health in the game

Empire
Primary: Arc caster (chargeable), Commando Pistol

Secondary: Thermal Detonators

Special Ability: Flight