
They are the first and best line of defense in the Republic military.

Unstoppable and utterly fearless, Vanguards wade into battle wearing advanced heavy armor. Many of the Republic's greatest military victories can be credited to the decisive actions of a Commando in the field. Whether taking out an enemy bunker with focused fire or driving back an Imperial charge with a hail of concussive bolts, the Commando's high-powered hardware dominates the scene, laying waste to all unfortunates who fall within its range. Trained in advanced assault tactics and weaponry, Commandos charge battlefields with massive blaster cannons, overwhelming their enemies with brute firepower. This choice cannot be changed after selected.

A Trooper’s rifle is his best friend, and the military is constantly challenged to design faster, more powerful and more reliable blaster rifles every year. Whether fighting as part of a small strike squad or at the forefront of a larger force, the Trooper can unleash unrivaled firepower against his enemies.

The Trooper, also known as the Republic Trooper, is one of the classes in Star Wars: The Old Republic. ~ Star Wars: The Old Republic, Trooper opening crawl

" Now, an elite young sergeant from the Republic's famous HAVOC SQUAD has arrived to help defeat the separatists and restore peace to this war-ravaged world. " On the planet of ORD MANTELL, civil war erupts between loyal Republic citizens and violent separatist extremists waging a campaign of terror against their own people." Influential star systems break away from the millennia-old alliance, angered over the Senate's treaty with the Sith Empire."
