Strictly speaking, 'innovative' defines Machina engineering philosophy – from birth, Machina are raised to live and breath independent creativity in their works, to the point that a Machina that cannot fully grasp the complexities of their machines is more of an outcast than a pacifist Sangheili or a Yanme'e Unmutual. As such, Federation Battle Walkers are some of the most efficient walkers in the AUR, rivaled only by the imitatively-created USR Assault Platforms: it comes as no surprise, then, that these magnificent machines are numerous within the armed forces, filling various roles throughout.