abstract
| - Walkers formed the backbone of the GDI military in the Second Tiberium War, following aforementioned research and development. The Humvee was superseded by a Wolverine Powered Combat Suit with twin automatic cannons on its arms with recon as its role. The M1 Abrams was replaced with the Titan Medium Mechanized Battle Walker with an 120mm APDS side-mounted cannon. The Titan had a fairly long range and was often used to take out Nod defenses beyond their range. However, the technology was still being further developed, as the mighty Mammoth Mk. II was being developed and first units fielded at the time. Following the events of the Second Tiberium War, GDI was expanding on the concept, developing another walker unit, the Juggernaut, equipped with three 155mm naval cannons, as a countermeasure to Nod artillery. CABAL also invented the Cyborg Reaper, which grayed the line between cyborgs and walkers, as well as the massive Core Defender. However, as with everything, walker technology had its drawbacks. The mechanisms utilized by these units were not only expensive and complicated to build, they also required constant maintenance and were relatively weak and fragile in the face of enemy fire, as well as being unreliable in the field. Another weakness was their susceptibility to explosives when placed on legs. As such, the frontline walkers were gradually phased out and replaced with cheaper, more resilient tanks, such as the MBT-6 Predator and Mammoth 27, with only the long-range Juggernaut Mk. III remaining in general service in 2047. Steel Talons would be the last division of GDI to widely employ walkers, such as the Titan Mk. II and Wolverine Mk. II. However, despite being temporarily removed from field service, many commanders who had used walkers during the Second Tiberium War remained strong proponents of the technology, and saw to it that research continued. Following the Third Tiberium War, many in the GDI military felt that the Scrin could have been defeated more easily if they had kept their old mechanized walkers. It was not until the Tiberium Control Network was being constructed that more resilient and maneuverable walker technology was developed. and many walker units were reintroduced alongside their more conventional counterparts. By the Fourth Tiberium War, walkers like the Crawler and the Mastodon were widely deployed.
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