GLOBAL DEFENSE INITIATIVE
Originally founded in the aftermath of an alternative version of World War II, GDI was originally purposed as an international peacekeeping force in order to prevent future world wars or any conflicts of a similarly destructive scale. However, with the arrival of Tiberium on Earth, GDI has since been repurposed as a counter-terrorist army with members from all over the globe - utilizing combined arms tactics to bring a quick end to any battle it finds itself involves in. The Global Defense Initiative also utilizes the technological sophistication of its weaponry and the superior training and loyalties of its officers, to end violent conflict between countries across the planet.
GDI uses a combined arsenal of small arms, tanks & aircraft that is displayed in their employment of mostly conventional weaponry, with platoons worldwide being commanded by a high-end command and control structure that is directly managed by Company Commanders - anonymous individuals who are gifted with unique battlefield skills who issue orders to said companies - and the officers, who oversee and direct the accomplishment of given orders. GDI forces generally prefer heavy armor and superior firepower over speed and mobility when deployed in worldwide battlefields, also coming in with a heavy emphasis on its devastating combined air arsenal.
GDI has a singular global command - GDI Central Command (shortened as CENTCOM) - as its overarching supreme command post worldwide, with the location of the post remaining highly classified. GDI Supreme Commanders are usually appointed by the UN Security Council, or, in times of crisis, the UN General Secretary. The current Supreme Commander of GDI forces worldwide is US Army Brigadier General Mark Jamison Shephard.
Like previously mentioned, GDI recruits its members from armed forces all over the world. There are next to no restrictions on the nationality or backgrounds of the characters belonging to this faction - albeit certain traits might require SA+ approval.
BROTHERHOOD OF NOD
NOD is an organization with the characteristics of a religious movement, a multinational corporation, and a nation-state. The origins of the Brotherhood of Nod are shrouded in mystery - with the group itself claiming that it exists as early as 1800 BC. While the most recent reports of Nod's existence began to emerge from INTERPOL files collected during the Second World War, NOD rose to public prominence with the arrival of Tiberium in 1995. Due to its increasingly aggressive attacks since then, NOD has been classified as a dangerous terrorist organization by GDI - to which itself was found as a response to NOD's emergence.
The Brotherhood of Nod viewed Tiberium as the single most powerful substance on the planet and the future of mankind. Though the Brotherhood acknowledged Tiberium was a dangerous substance, it believed its benefits outweighed any risks. A core belief within the Brotherhood was that as Tiberium transformed the planet, humanity would be transformed into a new race capable of surviving in the new world, as demonstrated by the Nod prayer: "Let the earth be transformed, let those who believe in the power of Tiberium be transformed with it.", such beliefs being made common by its leader who is known to the public only as 'Kane'. As the leader of the Brotherhood, Kane was worshiped as the Prophet, with the Brotherhood claiming that he prophesied the arrival of Tiberium on Earth.
NOD operational doctrine states that commanders should control the tempo of combat operations, avoiding direct contact with the enemy until the time and place are just right. Stealth, speed, mobility, force composition, hit-and-run tactics and operational flexibility are the key to success. In its ways, NOD was viewed multiple times as being technologically superior to its UN-funded adversary, having pioneered early harvesting mechanisms of the green substance. Unlike its enemy, NOD operates as an unconventional superpower that utilizes unorthodox weaponry - such as flamethrowers - to gain its own advantage over the more conventional and shock-and-awe based GDI.
While this faction is cultic in nature, you are by no means restricted to roleplaying a zealot or a cult. You can be a disillusioned armed forces veteran who joined the Brotherhood because of promises of glory - You can be a militant or revolutionary that fights for NOD and views them as genuine liberators from the oppressed - or you can be a mercenary for hire. Like GDI, the possibilities are limitless - the only limit is your creative imagination. While NOD mainly operates in third world nations, it still manages to accumulate a rapidly growing army of volunteers worldwide - so, like GDI, you can roleplay a character with whatever background you wish - certain traits might require SA+ approval.