This is a total conversion mod for Empire at War / Forces of Corruption. It takes place right after the Battle of Geonosis in "Attack of the Clones". Replacing the Empire, Rebels and Zann Consortium with the Galactic Republic and Seperatist Alliance along with The Hutt Cartel, Pirates and Neutral Worlds.
So the Juggernaut is the Republics heavy tank unit and transport and it is a feared site of the battlefield. It now goes both forward and backwards and has multiple firing points with heavy blaster turrets, Anti Infantry fire and the rockets as seen in Ep 3