User blog comment:Drayco90/Deadliest Fiction: Galaxy Under Siege/@comment-143604-20120305002034

Okay- with T-2 days until the Reapers launch their invasion of Earth, I'm going to break down how these are going to work. The First Battle will begin in about a week, maybe two- I want to be able to accuratly portray the combat abilities of the Reapers themselves before beginning. Each battle will take place over the course of a few days- the Reapers will first send in waves of expendable units to soften up the Resistance. Depending on whether or not the commander of the battle is Soverign or Harbinger will determine how many and what types of Husks, Geth or Collectors serve as ground forces. After a few days of holding off against these alien invaders, the Reapers themselves will begin touching down and attacking themselves. The Reapers themselves are key to repeling the invasions- if the resistance can't shut down or destroy as many Reapers as possible, they WILL be overwhelmed. Each army is divided into the following classes-
 * Commander- this unit is a major leader. When they're around, they provide massive bonuses to their troops and if they fall, the morale drops at an incredible rate. People like Optimus Prime, Emperor Palpatine or Nick Fury serve this role for Resistance, while the only Reaper equivalents will be Soverign or Harbinger.
 * Hero Units- A step bellow Commander, Heroes offer minor bonuses or abilities on the battlefield to themselves or troops. They are powerful, well-trusted by their commanders and extremley effective. Characters like Darth Vader, Noble Six or Boone serve this role for the Resistance, while the Reapers have high-ranking Indoctrinated Servants, like Saren, Matriarch Benezia, the Collector General or the Shadow Broker serve this role for the Reapers. Hero units serve a much lesser role for the Reapers than for the Resistance, and they can be the key to the victory or defeat of a Resisting Army.
 * Ground Units- To continue the "RTS" annalogy here, the Ground Units are a menagerie of various soldiers and infantry units from the source material. These troops can not leave planetside, have a single basic weapon, and must rely on numbers and tactical placement to win. An individual faction may have a few unique Ground Units, while other factions, like the Autobots and Decepticons, are functionally the same with different colors. There may be anywhere between five to eight of these types per battle. The Reapers employ the Husks, Collectors, Geth and other basic units as part of their original invasion.
 * Uber Unit- The "big guns": these are gamechanging weapons or vehicles that the Resistance have that can change the course of a battle. Ranging from the Death Star to the Securitron Mk. II Army of Mr. House, these are extremley varied in their uses and applications. The Reapers don't really have anything to counter this paticular brand of weapon- every single Reaper would technically constitute an "Uber unit".

Expect the first battle- The Invasion of Cybertron, to begin in about a week to two weeks.