In my Fanfic, My character (Miyamoto Shinichi) is one of the Ace Pilots of a mercenary Organization named "Grand Cross" which is ONE of a Mercenary group (Yes...There're other Big groups as well) with a goal to regain peace on the earth, with a Zeta Gundam as his personal MS... It's in C.E. Universe, but I threw in some MSs from another Centuries as well...Except for Special Personal MS that is...Stuffs like Sazabi, Nu, Wing, Turn A/X, Or something one of a kind Gundam won't be here....
it takes place in the C.E Universe ...2 years after the event of SEED Destiny...ZAFT and Earth Federation is told to stop their war...While ZAFT along with it's alliance ORB finally found their peace, The Earth Alliance broke down...The Hundred Countries and Nations had turned down their alliances and began a World War on the earth....
In the chaos that raged on earth, there're still hearts that wants peace to be back...thus, Many Independent Organizations Formed (yes, the Grand Cross was one of them) with the hope to help maintaining the world's peace once again, but even so many of the organizations can't unite together because of their different Ideology and their different ways to maintain the peace ...
So, it's a story of Shinichi in this world of war...He's one of the first aces on the Grand Cross Organization along with his 3 comrades...and as the story goes, the Aces will increase along with the Great Work of the GC's Junkers Team... GC's Junker Teams managed to salvage many of the Special Mobile Suits Parts leftovers from the previous ZAFT vs EA war...and with the help of GC's advanced MS lab, Many of the Previously Destroyed Mobile Suit has been rebuilt...Calamity, Raider, Forbidden, Abyss, Chaos, even Destroy Gundam and many other GAT and ZGMF X series was salvaged and rebuilt by the Organizations (but no IJ, SF, Akatsuki, Destiny, or special things like taht coz It's still safe with their pilot....)...
The war of the Nations, conflicts between the Independent Organizations, difference of Ideals, Betrayals, Love, and other stuffs are what I tried to Tell the readers
... as well as the epicness of the battle...