The main fighting force consists of some of the best hand-picked troopers from the Federal Droptrooper units. These soldiers are given more freedom to pick armour and weapons than regular infantry.
Federal Augments are specially bred soldiers who are taller, stronger and faster than a normal human. They go through intense psycholological and physical training and although they are amongst the fiercest of fighters in the Federal Army they also have a reputation for their high moral values.
By adding a M-6756 Heavy Sentry Gunbot to the unit, you have one of the best equipped and strongest units currently available to the Federal command.
Below is a comparison shot of various Federal troops, showing from left to right, Federal Rifle Infantryman, Federal Augmented Droptrooper, SAT Droptrooper, Federal Marine Officer, Federal Light Infantryman, Federal Senior Officer.
The Federal Army miniatures are a mix of Critical Mass Games ARC troops with an EM4 mech, with some Odzial Ossmy and Khurasan for variety.