Disclaimer: I do not own Gundam or Code Geass, and this work is merely a creative and absolutely non-commercial exercise on my part.
Codes of Liberation
Prologue
They were like falling stars, fiery streaks raining down from the heavens to deliver divine retribution from the gods. Three hundred mobile suits, all of them advanced Valkyrie models forming the first wave of Operation: Gjallarhorn, tasked with liberating the Japan and by extension taking control of the Sakuradite upon which Earth's nations depended for their energy needs.
"Speed is stable at Mach 4." An automated voice spoke in a mobile suit's cockpit. "Reentry angle is optimal. Temperature levels are fourteen percent over predicted values, secondary systems activating to compensate."
"Commencing final diagnostics…" the pilot said, his fingers tapping at the controls on an armrest of the linear seat. "…fusion plant is stable…hydraulic systems are functional…electronics and avionics are operational…weapons on standby…"
The Valkyrie shuddered as it broke through the stratosphere, the ballute's thrusters firing on automatic to compensate for multiple sonic booms. The shuddering intensified for several seconds, and then died down. "Entering lower atmosphere…" the computer reported. "…speed is at Mach 0.7 and dropping. Compensating…"
The thrusters fired again, and then the radio crackled. "Wolf Leader to Wolf Squadron…" the squadron leader said. "…all Wolves report in."
"Wolf Two…"
"…Wolf Three…"
"…Wolf Four…"
"…all Wolves accounted for. The Gjallarhorn has been blown I repeat Gjallarhorn has been blown…"
We have achieved complete surprise.
"…the fallen shall feast in Valhalla…commence operational maneuvers…Hoch die Kaiserin!"
"HOCH DIE KAISERIN…!"
"HOCH DIE KAISERIN…!"
"HOCH DIE KAISERIN…!"
The Valkyrie shuddered as it ejected the ballute, and then the Minovsky Flight System came to life with a high-pitched whine. Mechanical eyes flashed as a beam assault rifle was aimed and fired three times. Three purple beams cut through a Britannian battleship at harbor's turret armor as it wasn't even there, and in a split second ammunition and fuel exploded in a flower of fire that sent debris spraying out over the harbor.
As the rest of 'battleship row' and the Britannian Fleet was reduced to burning wrecks, the mobile suits pressed on, pulverizing the naval yard and destroying the Sakuradite depots all the while strafing fleeing Britannian soldiers. Across the city other mobile suits were doing likewise to Britannian military positions, although for now they stayed clear of the Settlement which towered over the ghettoes.
As pillars of smoke rose over the city, the first transports began to descend, followed by the warships of the Imperial Fleet. The Liberation of Japan was underway.
September 01 Universal Calendar 0097, 2017 Ascension Throne Britannia…ten years have passed since the Transition inexplicably transported the space colonies and lunar cities to a brave new world. With the Transition having selectively left behind all Earth Federation government and military personnel, bases, and assets, the Axis Zeon faction was able to swiftly seize control of the spacenoids and unite them into the Solar Empire under the new Erzherzogin Mineva Lao Zabi.
The first years after the Transition were difficult, with the Imperial government having to simultaneously cement its position and rebuilding the economy, in particular the energy industry. The signing of the Imperial Charter in August of U.C. 0088 and the establishment of the Jupiter Nuclear Fuels Corporation (fifty percent owned by the Imperial government, and fifty percent owned by private shareholders) marked the reestablishment of political stability and energy security.
The succeeding eight years would see large-scale population redistribution, space colony construction, and industrial expansion, thanks to the brilliant leadership of Imperial Chancellor Furstin Haman Karn. Currently the Solar Empire's population of four billion is enjoying an economic boom marked with low unemployment and crime rates, financial and social stability, and economic prosperity.
However the Imperial government was well aware that Earth – even one not united or advanced sufficiently to expand into space – was a potential threat to their sovereignty. In July of U.C. 0095, the Federal Council and the National Assembly formed a Joint Committee presided over by the Imperial Chancellor to oversee a threat assessment of Earth as provided by Imperial Intelligence.
In December of U.C. 0096, the Joint Committee came to the conclusion that while it was possible to negotiate a possible settlement and peaceful coexistence with the European Union and (to a lesser extent) the Chinese Federation, the same could not be said of the Holy Britannian Empire. Furstin Karn would as a result order the ministry of war to immediately begin preparations for a war to forcibly stabilize the Holy Britannian Empire and bring it to the negotiating table with favorable terms for the Solar Empire.
Mobilization orders were issued on August 04 U.C. 0097, with the final plans for the campaign being approved by Kaiserin Mineva Lao Zabi on August 20 U.C. 0097.
It is September 01, Universal Calendar 0097…
A/N
Haman Karn is not Gihren Zabi, so her Solar Empire is not Nazi Germany, and more German Empire.
Erzherzogin = Archduchess
Furstin = Princess
Kaiserin = Empress
Hoch die Kaiserin = literally 'the High Empress' or contextually 'Hail the Empress'