Prologue
In the fourth century AD, Rome was in serious decay. Barbarians stood at every corner, lurking for plunder and destruction upon the weakened Roman Empire.
However, Marcus Julius Aurelianus II was born in 334 to change history. He led the armies of the once mighty Constantinian Era and crushed the enemies of Rome one by one. By 359, Rome was once again safe.
Aurelianus revolutionized the economy by banning slavery and instead making companies fight for employees. Now that every worker was being paid, food arrived to houses, the inflation was lowered and the economy flourished. Trade was opened with the Sassanid Empire as hostilities ceased through negotiations between the Romans and the Persians.
When Aurelianus died in 400 AD, the Roman Empire stretched from Arabia to Hispania (Spain) and from Germania to Aegyptus.
Throughout the next three centuries, technology advanced tenfold. The Chinese and their gunpowder brought a new era to the Romans in the 7th century. When the Sassanid Empire was conquered by roman armies in the 6th century, the Roman Empire began an extremely good contact with the Chinese, both exchanging technology and customs in the process.
By the 15th century, technology was so advanced that the Romans were colonizing Americus. Large swaths of territory added to the SPQR.
The Chinese and the newly discovered Japanese Empire fought each other over the northern freezing parts of Americus and the south portions left alone by the Romans due to stiff Native American resistance.
The Romans intervened in 1576 at the Japanese side, and the first Great War began.
For over twenty years, the Romans and Japanese fought side by side against the hordes of Chinese soldiers. Now, with automatic rifles and incredible battleships, the war soon turned into a bloodbath.
When the Chinese surrendered as Roman/Japanese troops entered Shanghai in 1598, more than one billion people had died in the conflict….
For over fifty years, the Pax Romana and the Shogunate flourished, while the Chinese population recovered under Roman/Japanese rule.
Finally, escalations brought war between the Romans and the Japanese over the Austrialasis continent. Both countries clashed with their navies and air forces until finally the Romans broke through and launched a ferocious amphibious invasion on Japan.
When the Japanese surrendered in 1606, the Romans discovered several new pieces of technology at the hands of Japanese scientists, which brought about the Era of the Rockets (1610 – 1678)
The first Roman archeologists and scientists landed on Mars on 1730. Later, mining operations looking for strange minerals began and new technology was discovered, technology that belonged to the once mighty but now extinct Protheans.
The roman population boomed as the last portions of Terra were added to the Roman Empire. Space was being explored to its fullest, and a new colony was colonized by Roman Legions in 1740.
The colony was named Shanxi, in honor of the Battle of Shanxi, where more than two million soldiers had died to carve a path to Shanghai.
The rest, well, its history…
Dates of Importance in the Imperial Tritarchy Codex
1730 – Roman archeologists and miners discover Prothean artifacts on Mars.
1745 – The Dwemer make contact with humanity by accidently bumping with human miner ship "Zeus" and soon after establish an embassy on Earth.
1750 –Edus Primus is colonized and claimed by humanity; Feros and New Tarentum soon follow.
1753 – The Dwemer and Humanity sign an economic agreement. Their respective economies grow soon after.
1754 – Humanity makes contact with the quarians through exploration of the Kepler Verge.
1755 – The Quarians grow interested in the new species at the galactic scene. Negotiations begin between the Quarians, Dwemer and Humans.
1760 – The Quarians establish embassies on Earth and Dwemeris respectively. Technological exchanges begin.
1761 – The Quarians sign an economic agreement with the Roman and Dwemer Empires.
1765 – The Quarians help both humanity and the Dwemer establish diplomatic relations with the Council by acting as intermediaries.
1772 – Humanity establishes an embassy on Rannoch. The Dwemer begin construction of an embassy there a few days later.
1775 – Humanity and the Dwemer stage war games in the Atticus Cluster.
1779 – Several pirate attacks from the Batarians upon Dwemer, Quarian and Human ships anger Dwemer Emperor Julius Zertais. In retaliation, the Dwemer destroy an entire fleet of pirates from the Terminus Systems.
1803 – The Quarians begin massive research on AIs.
1807 – Roman Emperor Julius Caredeniz III meets Dwemer Emperor Marcus Arpeniax V, and both agree on a treaty, though it's not disclosed to the public.
1812 – A military alliance is announced between Humanity and the Dwemer. The Imperial Senate of the Intergalactic Alliance is established. The Council starts sending Spectre agents to human and dwemer space.
1814 – Peace accords are signed by the Imperial Alliance and the Batarian Hegemony, declaring the Skyllian Verge a "batarian zone of interest" and helping batarian colonists settle the system. Batarian ambassador Kisha'Miad declares that "his people will always welcome Imperial Alliance citizens in their system and will always remember this 'breath taking' moment." Both governments sign a non-aggression pact.
1815 – Human, Dwemer and Quarian scientists begin research on new weapons for Dreadnoughts, Cruisers, Destroyers and Frigates in close cooperation.
1824 – Asari Spectre Aliva Decis is captured and executed by Praeventores (Secret Police) of humanity in Edus Primus. The Shadow Legion of the Dwemer Empire captures and executes Turian Spectre Lorik Marex on Dwemeris. Relations with the Council turn sour for both powers.
1856 – Roman scientist Kaeso Brutus discovers that biotics can be "created" by eezo. Soon, the Roman Military begins research on it. The Dwemer follow suit.
1860 – The Intergalactic Soccer League is established by humanity. The Dwemer join the same year, while the Quarians would join a year later. Construction of the Julius Caesar Imperial Stadium on Edus Primus begins. The batarians send a team composed of military soldiers adept at soccer. This team would lose in the quarterfinals to the dwemer by a score of 2-1.
1865 – Quarian amateur boxer Mirdo'Klevais Vas Rannoch knocks out Roman boxing champion Marcus Darius Divia (30 Wins/ 28 knockouts/ 0 losses) on the third round. Quarian boxers soon become a force in the sport.
1871 – The Roman Military begins recruiting Krogan and Drell as auxiliary soldiers and centurions.
1873 – Plumbatarii gunships are designed by Roman military engineer Cornelius Flaminius II. The quarian military agrees a deal to buy two thousand gunships from the Imperial Alliance and Aquincum Inc.
1877 – The Quarians create the first Geth units.
1879 – Roman scientist Livius Africanus warns the Quarians of the dangers of the Geth, arguing that the more they are the more intelligent they get, but his statement falls on deaf ears as the Quarians begin mass producing them. Africanus predicts a "big event" done by the geth in the next ten to fifteen years.
1887 – The Roman and Quarian Space Fleets achieve superpower status.
1889 – The Dwemer Imperial Defense Fleet achieves superpower status.
1895 – The Morning War (Geth Uprising) begins. The Geth begin their massive revolt and assault on all Quarians. Five Imperial Alliance Fleets rush through the Perseus Veil. Soon, Human/Dwemer Fleets start deploying Imperial Alliance Legions on Quarian colonies. Emperor Marcus Agrippa I launches Operation Brotherhood and gives a televised speech in which he declares that Quarians as "our friends and brothers, they must be helped against a brutal, monstrous and merciless race of machines that threaten the galaxy and its entire species." Urban Cohorts and Arcanii units are sent to Rannoch. Livius Africanus appointed as Supreme Imperial Scientific Advisor.
1897 – The Council, for the third time, refuses to help the Quarians, claiming that "the Geth were the Quarian's mistake, and should learn from it." The Roman and Dwemer Empires denounce the Council publically and abandon their own diplomatic missions soon after the Quarian Embassy is closed by Council authorities, with the dwemer ambassador Lex Prastus calling the Council "bunch of bloody faggots" in a televised interview. Trade sanctions imposed on Citadel products on Imperial Alliance territory. Several asari diplomats expelled from Roman and Dwemer Space.
1898 – Massive evacuations begin on numerous quarian colonies. Emperors Julius Sergius and Lucius Maxentius II ratify Operation Second Home, the evacuation of millions of quarian, human and dwemer citizens from the battle lines in the Perseus Veil.
1899 – Rannoch becomes a warzone as Quarian Marines and Roman/Dwemer legionaries engage Geth forces all over the planet. The Imperial Alliance Fleets gain air supremacy on 70% of the planet. Haratar is captured by the Geth. Arcanii forces evacuate several high ranking quarian leaders from Quarian Space. More than twenty million quarian civilians evacuated to Imperial Alliance Space.
1900 – Arcanii units are ordered to evacuate thousands of scientists, engineers and important political figures of the Quarian Republic. Roman General Marcus Scipii manages to stabilize the frontlines on Rannoch against the relentless geth advance.
1901 – Imperial Alliance forces, under General Flavius Sergius, land and secure Haestrom after more than three weeks of heavy fighting. Flavius, a tactical and strategic military genius, is then sent to Rannoch to take over command of the Roman Rannoch Strike Force. Battle for Haestrom leaves 10,000 IA soldiers killed in action and more than 100,000 quarian civilians dead or wounded. One million quarians, however, are successfully evacuated to Imperial Alliance Space.
1902 – Ten Roman Tank Divisions, at the command of Gen. Flavius Sergius, are deployed all over Rannoch to be used as the spearhead of the new counterattack planned by the Imperial Alliance and the Quarian Military. The 2nd, 3rd and 4th Imperial Alliance Fleets, led by Admiral Vatulus, a great Dwemer military leader, destroy the majority of the Geth Fleet in the Perseus Veil.
1903 – Quarian-Imperial Alliance Forces, led by General Darel'Gerrel Vas Rannoch, repel a huge Geth assault on the Southern Continent of Bes'Casirts.
1904 – Batarian Navy Forces intervene in the Morning War, destroying several geth patrols and pacifying more than sixteen fuel depots in the Perseus Veil.
1905 – The Geth Neural Network is weakened considerably as the Imperial Roman/Dwemer fleets, working closely with Quarian Destroyers and Cruisers obliterate several Geth factories and bases throughout Quarian Space. IA-Quarian forces capture the city of Auwa'Sis after three weeks of heavy fighting. IA Forces, commanded by General Sergius, launch a powerful assault on the Fudii Region.
1907 – Flavius Sergius is named Supreme Commander of all Imperial Alliance forces in Rannoch. The Geth capture Ludilmis, capital city, from the quarians, inflicting heavy casualties on the retreating Imperial Alliance and Quarian Army forces.
1910 – Army Group South, under the command of Supreme General Flavius Sergius, establishes control over the capital city of Ludilmis after several weeks of fighting. The Battle of Olwis Vasirts begins.
Randompeoples – I hope this helps you understand what I am trying to do. It's a complete twist of the ME Universe.