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|For other uses of the technology, see Ion.|
|“|| The boys at R&D have completed preliminary testing on the ion cannon, the next generation of strategic defense armaments. Its geosynchronous orbit gives it a target diversions factor of 8-to-1. It's an awesome weapon, the most powerful in our arsenal.|
- General Mark Jamison Sheppard near the end of the First Tiberium War.
Each ion cannon (part of the Orbital Defence Matrix) circles Earth on a geosynchronous orbit. It has become the signature weapon of the Global Defense Initiative ever since its introduction during the First Tiberium War. It is capable of obliterating any location on the world with a precise, calculated strike of unforgivingly destructive power.
First Tiberium War
Approved by the UN in 1996, the development of the ion cannon was led by the talented Doctor Wong Hu Chan. The weapon's potential was deemed a sufficient enough threat to the Brotherhood of Nod that Kane ordered the doctor's assassination. This was duly carried out by Nod forces. Despite the loss, development continued and the weapon system entered service by the end of the First Tiberium War. The advent of the ion cannon corresponded with a promise by GDI never to use nuclear weapons.
An advanced communications center at field bases provided operational commanders with a secure control uplink to the ion cannon. A queuing system was introduced to manage the demand for the deployed systems, and this practice continues.
The GS-2 beacon was developed for troops to request strikes in the field. One was used to penetrate the Temple of Nod in Cairo. The resulting Ion Strike cracked the Temple's reinforced defenses, allowing the commando, Nick Parker, to penetrate the temple's perimeter.
The most notable use of the ion cannon during the First Tiberium War, was when GDI assaulted the Sarajevo Temple of Nod, where Kane was barricaded inside. GDI obliterated the Temple, and Kane, in one strike.
Nod attacked a GDI base in Botswana and captured the ion cannon security codes from an advanced communications center there. Using these codes, Netwarriors operating from a South African Temple of Nod, infiltrated GDI's orbital defense matrix and gained access to the ion cannon. The weapon was then used to destroy a notable Western landmark. The first generation Ion Cannon has the appearance of a large-width beam of light with no distinct color.
Second Tiberium War
A single-beam weapon was most common during the Second Tiberium War. The uplink for operational commanders was mounted on the Upgrade Center. The weapon had a bit larger area of effect, capable of taking out multiple enemies if close to one another.
|The following is based on the Nod campaign for Tiberian Sun and some details might contradict canon.|
For security purposes, the ion cannon control codes were divided into three parts and stored at three separate Upgrade Centers at a facility near Hammerfest. These measures were considered "paranoid" by the Nod AI, CABAL, but given the hacking of the ion cannon during the First Tiberium War, this is understandable.
Third Tiberium War
The Ion Cannon is the superweapon support power for the GDI. It's an extremely powerful weapon capable of turning the tide of battle that can be fired anywhere on the battlefield, even if the target zone is covered by the fog of war. Only a Construction Yard, Drone Platform, Mothership, or other superweapon buildings can survive a direct hit if they are at, or near, full health.
The type of system deployed had at least two firing modes. The first was commonly used against ground targets; initially eight secondary beams arranged in a circle gradually spun inwards until they joined at the center, damaging targets inside the circle and ionizing the air they passed through and rendering it combustible. After that, the primary beam fired and detonated the ionized air in the target area, causing a massive blast both inside and outside of buildings and vehicles. This was the first version of the Ion Cannon with a sufficient area of effect to level entire bases in a single strike. The second mode dispensed with the secondary beams altogether, designed as a more accurate tactical weapon, capable of hitting small, fast-moving targets. This was used to detonate the Liquid Tiberium Bomb at Temple Prime, to fragment Scrin ships into Drone Ships headed toward Earth, and was capable of destroying missiles aimed at GDI spacecraft.
The satellites were integrated into GDI's A-SAT system. In the lead up to the Third Tiberium War, the Brotherhood of Nod surmised GDI's dependence on the ion cannon networks was a critical weakness. The Nod AI, LEGION, raided the Johannesburg research facility and stole the plans for the ion cannon network. From those, Nod identified a critical point in GDI Space Command's control over all of the orbital weapon systems, including the ion cannons; the entire network was directed from a single ground side location at Goddard Space Center. A Nod attack on Goddard disabled the A-SAT system and the ion cannons, leading to the destruction of the GDSS Philadelphia.
Nod also developed Ion Cannon Disruption Technology, rendering locations immune to ion cannon attack. This technology was deployed at Temple Prime; disabling this part of Temple Prime's defenses was a key objective during GDI's assault.
Ion cannons were powerful enough to destroy incomplete Scrin Threshold towers once the protective Phase Generators were disabled.To date, this version of the Ion Cannon makes it undeniably the most powerful superweapon in the entire history of the series.
The ion cannons in service during the Ascension Conflict introduced increased flexibility. The power of the ion cannon's blast was determined by the time it had to charge between uses. There were six discharge levels, with each succeeding level producing larger blasts and EMP effects.
Doctrinal changes stemming from the Incursion War delegated battlefield ion cannon deployment to the defense branch. Also, it appears that some, if not all, Ion strikes actually originated on the surface, being fired from a ground-based generator bunker at an orbital mirror that would reflect them back down to the target.
Furthermore, smaller, more maneuverable ion cannon satellites of reduced power were introduced for use by Zone Captains.
Command & Conquer: Tiberian Dawn
The cannon fires a single beam with an internal damage value of 600, which is exactly enough to destroy an Advanced power plant. Note that the original game (before the fan-made patch) has a rounding error on weapons doing large amounts of damage, because warheads doing "100%" to certain armor types actually had this value stored as "255/256" (99.6%). This bug prevented the ion cannon from completely destroying an Advanced Power Plant.
Its area of effect is more or less a 3x3 '+' shape, with the center cell receiving the most damage, and all cells around it, primarily those directly perpendicular to the center, receiving spread damage from the weapon.
Note that due to the way weapons and damage spread works in the original C&C game engine, a large building targeted by the weapon would only receive the primary damage, without the additional spread damage, even if it would technically affect other cells of the same building.
Command & Conquer: Tiberian Sun
Each cannon strike causes 751 damage, dealing full damage to all armor types, and has a 100% chance of deforming the terrain. The strike deals splash damage; the damage inflicted is halved for each 40 pixels the target is from the target point.
Command & Conquer 3: Tiberium Wars
While a single-beam mode is shown in the cinematics, only the multi-beam mode is used in the game. The third generation Ion Cannon was the most powerful, capable of obliterating entire bases except for the Construction Yards and Superweapon buildings, which still took significant damage. It had a splash radius almost the size of the screen, and dealt equal damage over its whole radius. Unlike its older models, airborne units can be damaged by the blast.
Command & Conquer 4: Tiberian Twilight
The ion cannon has six nodes that charge sequentially. It takes three minutes to charge all six. The number of charged nodes determines the weapon's power. More nodes also add EMP effects. The maximum charge "decimates" small and most medium-sized units in the blast and cripples survivors with an EMP for a significant length of time. Achievements can be earned if the player launched a fully charged Ion cannon and if they destroy 20 units with it.
- ↑ Selinske, Joe. Command & Conquer Bible: A Definitive Guide To The Command & Conquer Universe. Las Vegas, Nevada: Westwood Studios, 1999.
- ↑ 2.0 2.1 Developer Q&A #7