It has the longest firing range of all units and structures in the game, outdistancing even the rocket turret defence, and is effective against all non-infantry targets, including aircraft. Missile Tank- Available to House Harkonnen and House Atreides (Ordos may still purchase them though Starports).Its ordnance is good against structures and vehicles but less so against infantry units. Combat Tank- Depending on the House which this unit is built from the Harkonnen version of this tank is slightly better armored than its other 2 counterparts but sacrifices movement speed and reload speed for it House Ordos' tank is faster, both in movement and reload, with considerably less armor whereas House Atreides' tank enjoys the balance of both these extremes in terms of reload-time, speed and armor values.This unit is moderately armored and armed with a heavy siege cannon which is strong against buildings and infantry but does far less damage to other vehicles unlike its Dune II counterpart. Siege Tank- Another major deviation from Dune II.It basically fires rockets like its infantry counterpart and is weak against infantry but is rather useful against other vehicles.
The Ordos originate from a frigid, ice covered planet called Sigma Draconis IV in Emperor: Battle for Dune. The Baron's Mentat, Hayt De Vries, was born from the flesh of a dead man in the Tleilaxu Flesh Vats. According to Lady Elara, the only thing human about the Harkonnen is their genetic makeup, as all humanity was abandoned long ago in favor of brutality and maliciousness. The Harkonnens are ruled by the wicked Baron, and come from the volcanic waste-planet of Giedi Prime. The Duke also wishes to develop an alliance with the Fremen, the native warriors of Dune. The House's fleets of ornithopters ensure their superior air power. The Duke's famous Mentat, Noree Moneo, advises and resides over the Duke's forces on Arrakis. Hailing from the water-planet of Caladan, the Atreides have a strict loyalty to their Duke and follow him with zeal. There are also four non-playable subfactions: House Corrino, the Fremen, the Mercenaries and the Smugglers. The only question is: whose side will they lead in the First Spice War?
Meanwhile, Lady Elara of the Bene Gesserit, bound concubine and truthsayer to the Emperor, secretly takes the commander - the player - into one of the Imperial Heighliners, a person whom the Sisterhood had studied their bloodline and future, including visions of the commander dying many times, then rise to control massive armies and bring peace to Arrakis. Emperor Frederick IV Corrino has issued a challenge that the House which can produce the most spice will control its source, the desert planet Dune, with no rules as to how the Houses can achieve the goal.