Geth Rocket Trooper
From Mass Effect Wiki
The Geth Rocket Trooper carries a rocket launcher along with a normal pulse rifle. They have two levels of shielding, and are more resilient than standard geth grunts. This class of geth is specialized to incorporate heavy firepower against groups of enemies. They are usually dispatched alongside Geth Troopers and Geth Shock Troopers. Rocket Troopers are instantly noticeable as they sport dark red armour rather than the standard dark blue and black of a Geth Trooper.
There is an even more deadly variant of the Geth Rocket Trooper, the Geth Juggernaut.
[edit] Tactics
Rocket Troopers only use their rockets for long and mid-range combat, switching to their standard pulse rifle if you reach close-quarters on foot. It only takes one rocket to kill or seriously injure infantry, however, so avoid charging until they've switched weapons.
They use two different rocket types when at range. At < 100m they resort to the Disruption Rocket that does heavy splash damage. However at a further range, 100-400m, they use Scram Rockets which do less splash damage but move very fast. Their rockets can quickly whittle down the Mako's shields, but as these rockets have no homing capability, they are fairly easy to evade in a vehicle or on foot.
