Silencer - definitely not conventional forces - a killing machine trained to be the ultimate soldier. Silencers are given complete freedom to choose their own weapons and equipment, but can always be recognized by their unique uniform of rigid plastic-armor plates.

The Silencer is, as a person, seemingly not who the Resistance would want him to be. He is apparently amoral, having no hesitation to commit larceny, terrorism, or murder for any reason--or no reason at all. Additionally, despite Hoffman's insistence that the Captain had defected for moral reasons, advertisements for the game seemed to indicate that the initial reason the Silencer joined the Resistance was not because he believed in their cause, but because he wanted revenge, and it would be at least somewhat easier to do it with support than without. Further, the Resistance itself does not seem to care how many civilians the Silencer kills in-game, as long as he gets the job done. In game terms this is likely for design simplicity's sake, but nonetheless creates a disturbing view of the character, and of the Resistance itself (or at least of the bleakness of their situation, if they are willing to ignore the actions of a pitiless killer if he'll help them win the war).

No pity. No mercy. No Regret.

Logically there is no way a mech will be created for military purposes in replacement of conventional forces. What one would see is armoured suits akin to Starship Troopers (The book not the crappy movie)