The new Infiltrator class units were introduced along with the latest game mode Capital Supremacy and they're pretty exciting characters: the Republic ARC Trooper and BX Commando Droid.
ARC Trooper
Advance Recon Commandos are the best of the best in the Grand Army of the Republic and are what every clone trooper aspires to be. ARC Troopers are sent on missions that are often considered too dangerous or even suicidal for most clone troopers.
The ARC Trooper carry a pair of DC-17 blaster pistols which can be fired in rapid succession. The primary pistol can be charged up to fire a Power Blast. Once fired, this ability will deal incredible damage to vehicles and lethal damage to infantry units.
The ARC Trooper carries a variety of gear that gives them the upper-hand in any engagement. Helmet Scanner sending out periodical pulses that reveal enemy positions through walls and smoke.
The ARC Trooper also carries a shock trap, which can be manually triggered device that sticks to all surfaces and, after being manually triggered, will send out a sudden outburst of electricity that will topple enemies in the opposite direction.
BX Commando Droid
Baktoid Combat Automata's finest droid model, The BX Commando Droid is a more advanced model of the B1 battle droid. Unlike their more massed produced counterpart, the BX has tougher armor and has been programmed with improved tactics and situational awareness. These droids prove to be a deadly match even for the Republics finest ARC Troopers.
The BX is a carries an upgraded version of the E-5 blaster rifle used by the mass produced B-1 battle droids which it uses to pick cones off at a distance.
The BX is just as deadly at close quarters as it is at range with the Vibroblade Ability. The commando droid can unsheeth the vibroblade on its back and chain up to three swings, slashing through clones like butter.
Another trick the BX has up its mechanical sleeve is the smoke screen ability. The commando droid can throw a grenade which produces a cloud of smoke that can turn a sticky situation into a tactical advantage.
Unlike the mass produced B-1 battle droid, the BX commando droid has glowing white photoreceptors which turn red when it activates its Scanner Ability, which allows it to see through its smokescreen and make the confused clones easy targets for a head shot from its E-5 blaster or a quick slash from its Vibroblade.
When used in combination, these abilities make the BX a force to be reckoned with on the battlefield.
STAR CARDS For the moment, there are only five star cards for the infiltrator class and no announcement has been made if developers plan to add more.
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Desperation - Reduces the ability recharge times when damage is dealt to you.
Evasion - You have +1 combat roll in faster combat roll recharge times.
Interrogation - Reveals nearby enemy locations by defeating an opponent using melee strikes.
Acquisition - Enemies dealing damage to you will be temporarily marked for easier retaliation.
Stalker - Regain health when defeating an enemy you have revealed with your helmet scanner or thermal vision.
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The BX commando droid and ARC Trooper have been very well received since their introduction on March 26th and have been a welcoming new addition to Star Wars Battlefront II.

