I imagined that when the Fallen first invaded Earth, whatever military we had at the moment tried to copy the design and technology that they brought with them. Incorporating some shapes of tanks onto the Devil Walker idea.
Giant Killing Machines, Direct From Russia
Tiger by KaranaK
concept ships: Concept ships by Lorin Wood
Nave conceptual, videojuego "Halo: Reach" por Isaac Hannaford / Concept spaceship, "Halo: Reach" videogame by Isaac Hannaford