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The dual-mode siege tank concept was a response to the Guild Wars and the goliath. Prior to the war, work had progressed on a static "final defense" cannon. However, the conflict demonstrated the need for mobility and as a result an effort was made to make the cannon more mobile. The solution was creative. An existing tank design was modified so that it could operate as a conventional tank in addition to being able to deploy the cannon and become a static artillery emplacement at will. Mobile siege tanks were in existence by 2480, several years before the official beginning of the Guild Wars. These tanks were able to be fueled by oil.
Siege tanks function in two modes. First is the "tank" or "assault mode" in which the vehicle may be used in the familiar armored support role using relative light weapons. The second is the more radical "siege mode" in which the vehicle becomes a static emplacement able to deploy a much more powerful and longer ranged weapon.
- Siege tank pilot(src)
The AAV-5 was in service by 2491, renowned throughout the Confederacy for its heavy firepower and stalwart emplacement/advance tactics. It had a crew of three: gunner, driver, and commander/navigator, though could still be crewed by a single operator. In addition, the Arclite version could serve as an APC of sorts, carrying personnel into a hot zone and deploying them via side/rear hatches.
The Arclite made navigation easy via its interior viewscreen, although a top hatch still existed should a crew member wish to survey the area personally and/or signal fellow soldiers. The tank also provided a targeting computer, which not only keyed in on heat sources, but also identified their range, notably whether they were in range or not via visual and audio indications.
Arclite armament consisted of twin 80mm PPG-7 plasma cannons when mobile and the 120mm Shock Cannon when in siege mode. Later on this was upgraded to the 120mm Mjolnir Artillery Cannon, which fired plasma shells in contrast to the standard explosives of the Shock Cannon. Such weapons were sometimes used for "scorched earth" operations.
By the aftermath of the Brood War however, the AAV-5's "tank/assault mode" left much to be desired. Its armament and armor was too light to either advance, or hold a firebase from close-quarters assault, without significant support. The Crucio was developed to address these shortcomings.
The Crucio features superior protection and armament compared to its predecessor. The Crucio was designed for increased survivability, with an enlarged, reinforced turret and hull. The turret layout also features an upgraded Tank-Mode armament package, allowing the Crucio to defend itself more successfully in open battlefields. The Crucio is costlier than its predecessor, but its increased versatility justifies the expenses. By way of armament, the Crucio possesses twin 90mm plasma cannons. in its assault mode and a 180mm Shock Cannon that scatters superheated tungsten in an area 50% larger than the 120mm version. Maelstrom rounds are an alternate form of ammunition.
Dominion infantry soldiers are universally convinced that Crucio operators inflict more damage on friendly forces than on the enemy. Consequently, Crucio operators stick together during shore leave. LarsCorp addressed this issue by developing a "smart shell" for the Crucio that scans for allies on impact and adjusts its detonation to minimize damage to friendly units. Field tests have shown that this shell reduces friendly fire fatalities by 75%, though due caution is still recommended when walking into a fire zone.
- For StarCraft gameplay information see: Siege tank (StarCraft).
- For StarCraft in-game quotations see: StarCraft Siege Tank Quotations.
The siege tank has many stereotypical, military quotes. The driver of the tank is seen as a large man in body armor who speaks in military lingo. Several of his quotes are obviously taken from the classic Vietnam War films Full Metal Jacket and Apocalypse Now.
This article or section contains information about StarCraft: Ghost, which has been declared non-canon. Elements may be taken as 'flavor lore' however.
In StarCraft: Ghost, Nova was able to call down artillery support from siege tanks by identifying targets. Siege tanks were player drivable in multiplayer, and were able to run over and crush other players and vehicles.
- For StarCraft II gameplay information see: Siege tank (StarCraft II).
- For StarCraft II in-game quotations see: StarCraft II Siege Tank Quotations.
Known Siege Tanks
Known Siege Tank Units
Known Siege Tank Commanders and Crewmen
- General Edmund Duke
- General Martin
- General Horace Warfield (Heroes of the Storm only)
- Captain Marius Blackwood
- Sergeant Hammer (Heroes of the Storm only)
- Sergeant Forest Keel
- Sergeant Wendell Sovens
- Private Armstrong
- The 120mm Mjolnir cannon is a reference to the hammer of the Norse god of thunder, Thor.
- Crucio is a Latin word which means "I torture."
- Artwork from StarCraft: Ghost Academy: Volume 2 depicts Crucios being in use during the Fall of Tarsonis. This contradicts all other sources of information and is likely an artistic error.