GameSpot have a second Supreme Commander Designer Diary that looks at two of the worlds and two of the main characters that command the United Earth Federation.

We're continuing our look at the three factions in Supreme Commander by examining the backgrounds of two of the main characters in the game, both of whom fight for the United Earth Federation. We also have background information on two of the UEF's main worlds. This info comes straight from the designers at Gas Powered themselves, so you'll have a chance to get acquainted with the story and setting before the game ships next year.

The UEF is the successor to the ancient Earth Empire, and its goal is to once again reunite mankind's interstellar empire under Earth rule. This means that the UEF is looking to defeat the Aeon and Cybran factions by any means necessary.