The Expansion of the Empire
This timeline diverges from ours in the winter of the year 47 BC. At that time, Julius Caesar, dictator of Rome, was fighting King Ptolemy XIII of Egypt. While in battle, Caesar's forces set fire to Ptolemy's fleet, anchored in the harbor of Alexandria. The fire soon spreads to the Museum of Alexandria and a dockside warehouse full of scrolls ready for export. The Museum
of Alexandria was actually more of a University and survived the fire fairly intact, except for the loss of its well known Library (which is more well known than the Museum now). If the wind was blowing in a different direction that day, the Library might very well have been saved.
The effects of this divergence might not be readily apparent and history would march on almost virtually identical to ours. After all, there is some dispute over whether or not the Library was actually destroyed at this time. So, it is safe to say that, for the most part, there would be no change to history for some time. Julius Caesar is still murdered on the Ides of March, 44 BC. The Civil Wars still continue until Gaius Julius Caesar Octavianus defeats Marcus Antonius at the Battle of Actium and becomes the first Roman Emperor and assumes the name Augustus. His early reign proceeds as it did in our time, until the year 4 BC.
In 4 BC, the Legate of Syria was one Publius Quinctillius Varus, who was finishing up his administration there. Varus was related to Augustus by marriage and was a good friend of the Emperor. In our history, he would go on to command the legions in Germania, get ambushed by a Germanian warlord named Armenius, thus ruining any hope of Roman expansion into the area. However, in this timeline, he decides to take a trip to Egypt and check out the marvelous Library before returning to Rome. While in Egypt, he takes a tour of the Nile and drowns. This event, though less remarkable than the saving of the Library, is ultimately more momentous.
With Varus out of the picture, in AD 6, Augustus will appoint Tiberius Claudius Nero, currently next in line to become Emperor, to pacify Germania Magna. Tiberius' nephew and adopted son Germanicus Julius Caesar, who happens to be next in line after Tiberius to become Emperor. While in Germania, they are also charged with the task of conquering the Marcomanni tribe residing in Bohemia. Though there were some difficulties, such as when the supposedly pacified tribes rose up while the bulk of the Roman forces were fighting the Marcomannni, by the time Augustus dies in AD 14, the area is largely secured and a string of forts line the Albis (Elbe) river. Germania Magna would now be organized into the provinces of Marcomania to the south and Cheruscia to the north. Germanicus is left behind to crush the Quadi, a tribe allied to the Marcomanni, while Tiberius returns to Rome to become Emperor.
Tiberius Claudius Nero ruled the Empire from AD 14 to AD 24, when he died of illness. His reign was most notable for the campaigns against the Quadi (conducted by Germanicus) and a major revolt in Achaea (Greece) and Macedonia.
The campaign was a resounding success, resulting in the expansion of the Roman Empire to the Viadrus (Oder) river. Germanicus proved himself as a very capable and shrewd commander in the fall of AD 22. Several conquered tribes (most notably, the Suebi, Semnones, Chauci, and Boii), as well as some as yet unconquered tribes (such as the Teutones and Carpi) assaulted the main Roman force, at the small outpost of Verbonia, near the mouth of the Viadrus. The Legions only had the support of one tribe, ironically the Quadi, which they had been sent to conquer in the first place (one account states that Germanicus himself was saved in battle by the heroic efforts of one young Quadi warrior). Though the numbers and terrain were against him, Germanicus developed a clever strategy. He ordered his forces to not attack the Suebi or Chauci forces. As the battle wore on, the other tribes noticed this and grew suspicious. A few well placed spies later, and the coalition crumbled into attacking each other, making for an easy Roman victory. In fact, reports say that there were more coalition casualties from attacking each other than there were from the Romans.
Upon their surrender, all of the opposing tribes were essentially deported to the far reaches of the empire as slaves. The Quadi, meanwhile, were rewarded for their loyalty and many Quadi chieftains soon found themselves in important positions in the new province of Quadia (the southern region of the newly conquered territory). To their north would be Langobardia. Though the Langobardi were actually a tribe native to the west side of the Albis, many of them had joined the Legions in the Quadi campaign (though their absence during the battle of Verbonia is suspicious) and were now living in the area. Further to the north would soon be the client kingdom of the Angli (Denmark), Regnum Anglae. Though this region was still unconquered, Germanicus was preparing a punitive campaign against the Teutones and their Cimbri allies. This campaign would be largely complete by the time he was recalled to Rome in AD 24, mainly due to the fact that the bulk of the Teutones' forces had been destroyed at Verbonia and the assistance of the very compliant Angli tribe. Still, the region would not be completely pacified for a few more years.
Meanwhile, to the south, there were problems in Greece. The governor of Achaea, Tiberius Julius Magnus, was not very liked by the people. The main reason was that the taxes he imposed on the people were too high, though he had some personal traits that weren't very admirable either (one -almost certainly exaggerated- account states that he raped a hundred upper-class young ladies). Whatever the exact causes were, Julius Magnus soon found himself murdered by a mob in AD 19. Soon, all of Achaea, as well as much of Macedonia were in revolt. The revolt lasted for 4 years, finally being crushed in December of AD 22 when Thessalonica, the last rebel holdout, fell. The entire population was supposedly enslaved and replaced with people from Italia, though this is probably an exaggeration. Still, the city did become an enclave of Latin-speakers for awhile, in an almost universally Greek-speaking region. The revolt also kept any Legions in the area from assisting Germanicus at Verbonia. Other than that, the major significance of the revolt is that the Kingdom of Dacia to the north had supported the rebels. This would soon prove fatal for the Dacians.
However, before anything could be done, Tiberius died and Germanicus returned to Rome to become the third Emperor. Tiberius' reign was most noted for the actions of others (Germanicus of Julius Magnus), though he was a fairly competent ruler. However, he had the unfortunate fate to be emperor right after Augustus, arguable the greatest Rome ever saw. Had Tiberius ruled during later years, when the Empire was collapsing, he might have been more appreciated. As it was, he was regarded as an average, almost mediocre ruler. He left the Empire in the capable hands of Germanicus, who soon began plans to invade impetuous (and relatively wealthy) Kingdom of Dacia.
Germanicus Julius Caesar ruled from AD 24 until AD 51. His reign would see the conquest of Dacia and the restoration of the Kingdom of Judea. He spent most of his reign outside of Rome, usually campaigning, often accompanied by his eldest son, Drusus Julius Caesar, leaving the day to day affairs in the city to his younger brother, Claudius Nero Germanicus, and his son, Nero Julius Caesar.
The Dacian campaign began in the year AD 25 as Germanicus led his legions over the Danube river into Dacia. Supporting him was an army of Quadi auxiliaries and Carpi allies. Allied with Dacians were Metatiastae, Costoboci, and the Roxolani. The Quadi and Carpi mainly faced the Metatiastae and the Costoboci, while the Romans fought the Dacians and Roxolani. The Dacians surrendered in the year 29, and the main Roman force went to assist their allies, while the remainder continued to fight the Roxolani. The barbarians manage to hold down the main force long enough for the Dacians to rise up and attack the smaller Roman army left behind against the Roxolani, and wipe them out. The situation seemed dire, but the Costoboci and Metatiastae were nearly defeated by this point, and they don't hold out much longer. By the time the Dacians and Roxolani reach them, the Romans, Quadi and Carpi are ready and waiting. The campaign again turned in favor of the Romans and the Dacians again surrendered in 34, and the Roxolani in 37. The newly conquered territory was divided into the provinces of Dacia Superior and Inferior in the southern central region, Roxolania in the northeast, and Costobocia in the north-northwestern area, as well as the formalization of the Carpi lands into a client state (Regnum Carpae), which would later be formally annexed into the empire as the province of Carpia. Germanicus spent the next two years fortifying the new border along the Tyras (Dniester) river before returning to Rome. Germanicus would leave Rome in AD 41, to conduct of tour of the border provinces of the empire, starting in Anglia and ending in Syria in AD 48.
While Germanicus was away, Claudius was responsible for most of the administrative details of the empire. Nero died in 30, due to excessive drinking (he died much the same way as did Attila the Hun). A close friend of Claudius and Germanicus was Herod Agrippa, a member of the royal family of Judea, a former ally of Rome that had been absorbed into the Empire. Herod's lifelong ambition was the independence of Judea, with him as King. His loyalty and amiable relations with the Imperial family would prove to be the means to this end. in AD 34, by Imperial decree, the Kingdom of Judea would be restored as a client state of Rome, though this new kingdom didn't actually include the region of Judea. The usurper Herod Antipas would try to claim the throne in AD 39, though he ultimately failed. Agrippa sent him as a prisoner to Rome, where Germanicus, back from Dacia, exiled him to Macromania. To shore up the Kingdom, Germanicus added Peraea and Galilee, and later, in the year 48, added Judea and Samaria. This restored the totality of the Kingdom of Judea and created a staunchly allied client state out of what had been a troublesome and rebellious province.
Germanicus went down in history as one of Rome greatest military leaders, and a competent administrator, though the latter was mainly due to the actions of his brother, Claudius. His military exploits were on par with Julius Caesar himself, and Germanicus actually conquered more new territory for Rome than Caesar did. Germanicus left the empire to his son, Drusus Julius Caesar, whose reign would be cut tragically short.
Drusus Julius Caesar ruled Rome from late AD 51 to early AD 54. During his principate, King Herod would die, an agricultural revolution would be born in Cheruscia, and the Vandali would launch a major raid into Langobardia.
King Herod Agrippa died in AD 53. He saw to the restoration of the Kingdom and was loved by his people for it. His line would rule Judea for nearly 300 years, producing many good kings. Herod also persecuted the Christians in Judea with much vigor, as did many of his successors (often Christians were more persecuted by the Jews than they were by the Romans).
During AD 53, an Alexandrian by the name of Heron (or Hero) visited a friend in Cheruscia [just to note, nobody is sure when Heron actually lived. I've seen reports ranging from various times in the first century BC, to the second century AD. This timeframe is the most likely though]. Heron had recently invented the aeolipile, a primitive steam engine, and an overshot waterwheel (there is evidence that they existed previously, but Heron showed that overshot waterwheels were the most efficient). He also hoped to one day apply the aeolipile to the same use as a waterwheel, though he never did create a practical design (but filled the Library of Alexandria with various ingenious but flawed ideas and designs). Heron had been corresponding with his friend for some time and decided to visit him at his large villa. While there, Heron heard of his friend's troubles, which Heron, being the inventor he is, did his best to address them. Heron improved on the crop rotation method, has some waterwheels built on the villa, and invented the moldboard plow, to effectively work the soil. The failing villa becomes more and more productive, and within a few years, it was the most productive in the region. Slowly, other villas begin to adopt the methods and, by the year 100, populations in Europe were expanding rapidly.
Also during this time, the Vandali had been raiding the border provinces, which finally prompted action on the part of Drusus. Though the raiders are defeated and sent running back beyond the Viadrus, Drusus is hit in the left eye by a stray arrow and dies in battle, snuffing out his plans to invade the Vandali.
Drusus' reign was fairly uneventful until the end, so it is difficult to judge what his ability. The principate would pass to his uncle, Claudius, who proved to be a surprisingly apt ruler.
Claudius Nero Germanicus reigned from AD 54 to AD 65. While he ruled Rome, the Vandali were conquered and work was begun of the Claudian Amphitheater. Claudius also made several reforms to the government and enfranchised many provincials.
Claudius' decision to campaign against the Vandali is intriguing. On the one hand, he felt that Rome had expanded enough along that border and that his time would be better spent focusing on administrative details, or at least conquering Britannia, which he saw as more valuable. On the other hand, the Vandals did just kill the emperor, and many cried for revenge, plus the Vistula river would make a better border, as its source was close to that of the Tyras, providing an almost complete natural border. Claudius eventually did decide to attack, and in the year AD 55, the campaign had begun. The Romans only had the Carpi to the south as allies, while the Vandali had rallied the Lugii, Burgundiones, Lemovii, and Rugii to their cause. Just beyond the Vistula, the Gothones and Sciri had pledged not to interfere, but that was the extent of Roman support in the region. The early campaign focused mainly Lugii and the Burgundiones, to divide the Vandali from their allies, while the Carpi kept the Vandali from threatening the Roman thrust. This phase was finished by AD 57, at which point the Romans focused on the Rugii (defeated by 58), leaving the Lemovii completely surrounded by Romans. They held out until AD 60, and the Vandali were defeated later that year. Though the campaign was relatively quick (5 years compared to the Dacian campaign's 13), it was one of the bloodier wars fought by Rome against the barbarians (about 30% more casualties than the Dacian campaign), which is surprising when one considers how relatively lightly populated the area was. Because of this (and due to a nasty winter that Claudius experience while he was touring the forces), Claudius decreed that Rome should expand no further in this direction. The Legions agreed holeheartedly. The conquered territory was divided up into the provinces of Lemovia (in the north), Burgundia (in the center), and Vandalia (in the south).
Work was begun on the Claudian Amphitheater when Claudius returned from the campaign shortly in AD 58. It would not be completed until AD 72, and was the largest amphitheater in the Empire, capable of holding 80,000 spectators (compared to the 55,000 person capacity of OTL's Flavian Amphitheater).
While Empreor, Claudius reformed much of the empire, centralizing it while simultaneously increasing the standing of the provinces, by appointing several provincials to the senate, as well as granting citizenship to many loyal and romanized provincials. He also converted several client kingdoms into provinces, including Mauretania, Lycia, Noricum, Tracia, Carpia, and Anglia.
Claudius would eventualy die of old age in AD 65 (at 75 years old) and leave the empire to his son Tiberius Claudius Vandalius, named in honor of his father's conquests (OTL's Britannicus). Claudius would be remembered well by the provinces and lower classes, but not very well by the Senate and aristocracy.
Tiberius Claudius Vandalius ruled from AD 65 to AD 79. His reign would see the completion of the Claudian Amphitheater, the conquest of Britannia, and the eruption of Mt. Vesuvius.
Vandalius decided in AD 67 to conquer Britannia. A few fabricated tales of piracy and he was off to secure the region for the Roman Empire. With the support of the local Trinobantes, the legions conquered the coastal tribes of the Centii, Belgae, and Duranonii by AD 69. The Iceni fell in early 71 and the Silvres were conquered in 72. The only remaining opposition in the region were the Ordovices and Brigantes, who stood together under the leadership of the charismatic leader, Ariovistix. He proved to be a formidable opponent and it took the Romans until 75 to conquer the Ordovices. The Brigantes (who now included many of the Ordovices among their number) still stood defiantly and the Romans, decided to offer Ariovistix a peace treaty. He accepted, which ensured his people's independence for the time being. The conquered territory was organized into the province of Britannia and Vandalius returned to Rome a hero.
Upon his return, the Senate awarded him the title Brittanicus, which he also insisted be bestowed upon the general who was actually responsible for most of the success, Marcus Flavius Verus. Vandalius also adopts Verus as his son and heir, making him Tiberius Claudius Vandalius Flavianus Britannicus. Vandalius did this because he had no heirs of his own. He had only two children, one boy (who died a few years before), and a daughter (who he married to Britannicus to further cement the relation). Many historians have theorized that Vandalius was a homosexual, which would help to explain why he and his wife, Valeria Quinta, did not spend much time together (and why Vandalius had no objections to Valeria's frequent affairs).
The rest of Vandalius' reign would be mundane, until the eruption of Mt. Vesuvius in AD 79, which buried the towns of Pompeii and Herculanium. Vandalius happened to be visting the area at the time and helped to organize the evacuation of Pompeii (though the Praetorian guard wanted to leave the area, for his safety and, of course, their own). Sadly, Vandalius would die within the week, almost certainly due to the eruption.
Vandalius was yet another Emperor who earned his fame by conquering new territory and, except for his dramatic death, does not stand out much. He was the last Emperor of the Julio-Claudian dynasty, though some consider Brittanicus and his son to be the last members, as he married into the family (though the son was actually born to a previous wife). Still, Vandalius was the last blood relative of Caesar and Augustus to rule the empire, and he ruled well enough.
Tiberius Claudius Vandalius Flavianus Britannicus was Emperor from AD 79 to AD 96. During his principate, the Brigantes would be defeated and Caledonia (Scotland) and Hibernia (Ireland) would be conquered.
In AD 81, Britannicus made an alliance with the Caledonii, a tribe which had been attacked frequently by the Brigantes and was on the verge of collapse. Britannicus, along with his son, Manius Flavius Verus, then campaigned against the Brigantes. Though the Brigantes put up a tough fight, they could not withstand the combined offensive and were crushed in AD 85. Ariovistix was sent back to Rome as a captive, and his people's territory was split up between the Roman province of Britannia and the Regnum Caledonae (Kingdom of Caledonia), the new client kingdom formed there.
Britannicus then established a few forts along the coast of Britannia and on the Hibernian coast, to defend against the Hibernian Brigantes, who held a grudge against the Romans for the conquest of their Britannic brethren. Britannicus then returned to Rome, leaving the Legions in Britannia under the command of his son. Verus, eager for glory of his own, decided to conquer Hibernia. He campaigned against the Brigantes and their allies, the Eblani, Hibernii, and Robogdii, in AD 90, claiming that they had raided one of the coastal forts. By AD 95, the entire island was under Roman control as the new province of Hibernia. For this, Verus was given the title Hibernicus.
In that same year, Britannicus died. His reign was almost totally marked by military matters. The Principate would then pass on to his son who was still in Hibernia.
Manius Flavius Verus Hibernicus ruled Rome from AD 96 to AD 98. Nothing particularly interesting happened during his reign, though Hibernicus himself is an interesting character.
Hibernicus devoted most of his reign to pleasure, leaving major administrative details unattended. He squandered much of the large surplus left by previous emperors, most of it spent on the large and lavish estate he built for himself in Rome (the palace would be torn down after his death and the grounds would be opened to the public as a large park/zoo). He also picked up the bizarre habit of wearing pants (perceived as feminine or barbaric clothing in ancient Rome) while living in the north, and he even once forced the entire Senate to wear pants for a session. He also humiliated the Senate by proclaiming his wife, Justina, consul (though she actually did a good job in that capacity, especially in contrast to her hedonistic husband).
Eventually, he alienated the Senate enough that they murdered him in late September of AD 98. Upon the assassination, the Senate briefly considered restoring the republic, but the praetorian guard was opposed to such an idea. Therefore, they proclaimed a popular Senator, Decimus Viridius Aurelius, as Emperor.
Hibernicus went down in history as a lazy hedonist, though he was an apt military commander. Perhaps if he had actually put his military talents to use during his principate, he would have been remembered in a better light. As it was, he has the dubious distinction of being the first Roman Emperor to be assassinated.
Decimus Viridius Aurelius reigned as Emperor of Rome from AD 98 to AD 115. His reign would be mostly uneventful, except for the reception of a envoy from the Han Empire of Serica (China), Gan Ying.
We must now take a brief interlude to examine events to the east. From AD 80 to AD 97, the Han General Ban Chao had campaigned along the silk road, so that the nations lying on it would be under the control of the Han. The campaign culminated with a crushing victory over the Hunni. Based on the shores of the Mare Caspium (Caspian Sea), Ban Chao sent out an envoy, Gan Ying, to make contact with the empire known to them as Da Qing; the Roman Empire. Gan eventually reached the Pontus Euxinus (Black Sea). He then decided to board a ship to reach his destination and was almost dissuaded by a local sailor who told him exaggerated stories of the dangers of the voyage. However, Gan was a man of duty and decided to continue on, though he went by land. He journeyed through Armenia, into Roman Anatolia, and on to Italia.
Gan Ying eventually reached the Eternal City in the year AD 99. He and his entourage created quite a stir in Rome. Rome impressed them equally, with its tall buildings, gardens, and gigantic public works. Gan Ying would tell stories of Han Serica, to the delight of his Roman hosts. It was soon realized that both empires would have much to offer each other. In fact, in a letter written by Gan to Ban Chao stated that Rome and Serica were "but opposite sides of the same coin".
Gan would eventually return home in AD 103, leaving some of his entourage behind, and taking some Roman envoys along. Over the course of Aurelius' reign, diplomatic missions would be sent back and forth, strengthening relations between the Han and Roman Empires, to the growing concern of the Parthians, who did not wish to be surrounded by an alliance of the two most powerful nations in the world.
Aurelius died a peaceful death in AD 115, after a peaceful and prosperous reign that gave Rome time to breathe after its many conquests to the north, and was succeeded by his adopted son Tiberius Quintus Cosmus, a popular politician. Though Aurelius was a firm supporter in the republic and actively made reforms to expand the power of the Senate (largely by making many Imperial provinces into Senatorial provinces), the military (and, to a lesser degree, the Roman people) wanted an emperor, and Aurelius had to adopt Cosmus, renaming the future emperor Decimus Viridius Aurelius Cosmianus.
Decimus Viridius Aurelius Cosmianus' principate lasted from AD 115 to AD 134. The majority of his reign would be consumed by the war with Parthia, lasting from AD 118 to AD 132.
The war came about for a variety of reasons, the most important of which were the Parthian's fear of losing control over the trade routes between Rome and Serica, and a dispute over the succession of the Armenian throne. As the Han and Roman Empires worked out various trade treaties, they began to look for ways to circumvent the Parthians, who had grown rich simply by being in between the two Empires. Cosmianus had been sending out exploratory fleets around Africa and Arabia, in the hopes of replacing the land route through Parthia with a sea route. He even considered sending ships west, and reach Serica that way, but that plan was eventually deemed unfeasible. Still, it was only a matter of time before the Parthians lost complete control of the silk trade. So Parthia wanted to ensure its safety from Rome, and Rome (and to a slightly lesser degree, the Han) wanted to eliminate Parthia from the silk trade.
Then, in Armenia, disaster struck. Armenia was the main buffer state between Rome and Parthia, sometimes siding with one, sometimes the other. In the year 116, the Armenian king Arsaces I died without an heir. The nation was under the influence of Parthia at the time, so a Parthian candidate,Tiridates, who happened to the nephew of the Parthian King, Osroes, became king. This was an intolerable situation for Rome, as it could lead to Armenia becoming integrated into the Parthian Empire. In AD 118, the Roman Empire thus went to war with the Parthians, and the fate of the world changed forever.
The Roman plan was to launch a two pronged attack into Parthian territory, one army attacking to the north, and the second army attacking to the south. The northern army, under the command of Quintus Domitius Nepos, was to secure Armenia, then march eastward through Media, towards the Parthian homeland. The southern army, under the command of Gaius Barrius Avitus, was to hold the border until the northern army had most of the Parthian military after it, at which point they would invade Mesopotamia and head along the Persian coast, securing the prosperous Parthian subkingdoms of Elymais and Persis. The Parthian strategy was to take Judea and Egypt, thus preventing Rome from trading with the Han by sea. Losing Armenia would be an acceptable setback, if it came to that.
[to have an idea of what's going on, you might want to check out these pages.
http://americanhistory.si.edu/csr/nnc/parthia/frames/imapki.htm
http://members.aol.com/ahreemanx/images/map parthian empire.jpg]
In the first year, Nepos marched uncontested into Armenia, where his and his legions were relatively well received. He then continued into the subkingdom of Atropatene in Media. There, he face some stiff resistance. Meanwhile, the Parthians marched into Judea, meeting the determined Jewish forces first at Tyre, where they managed to force the Jews back. The Parthian army pursued them, leaving part of their forces behind to lay siege to Tyre. The two armies clashed again at Caesarea, where the Parthians won a narrow victory again. However, as they lay siege to the city, the Jewish forces regrouped and attacked. The two sides would fall into stalemate for a time, though the Parthians outnumbered the Jewish army and would eventually win.
However, at that time, Avitus' legions began to march south, to meet the Parthians, who had split again, one group marching towards Eqypt, while the other went for Jerusalem, in order to secure a Jewish surrender. This allowed Avitus to meet up with the Jewish army (which was still in good order after Caesarea) and defeat the Parthians outside of Jersulam in the summer of AD 119. Avitus then turned north to Mesopotamia and laid siege to Arbela, the capital of the subkingdom of Adiabene, near the beginning of AD 120. The Jewish forces consolidated their positions and bled a large portion of the other Parthian group as it marched back to meet Avitus.
Arbela fell to the Romans just days before the Parthians reached the city. Neither side could gain a significant advantage and the situation turned into a stalemate. The situation was the same to the north, where Nepos' legions had made little progress. The war would continue in this way for until the fall of 123, with the Romans making gradual headway into Parthian territory, but having a hard time of it.
In that year, the impressive citadel of Hatra, to the southwest of Arbela, fell to Avitus' forces, and Nepos finished off the conquest of Atropatene. Meanwhile, back in Rome, Cosmianus was beginning to consider ending the campaign, after seeing how costly the early phase of the war was. However, before he could decide on this course of action, news came from Han messengers.
The Han had been eying the subkingdom of Saka (who's king was also a member of the Parthian Suren family), on the very eastern edge of the Parthian empire, hoping to collect tribute from them. The king of Saka, Gotarzes, seeing that the majority of the Parthian army was tied up in the east, decided to revolt and, hopefully, expand his kingdom (and, if things went very well, become the king of Parthia himself). He sent envoys to the Han saying that he would accept the Han Emperor as suzerain, if they would sent assistance to him. His offer was accepted and, in September of AD 123, a new front was opened in the Parthian war. When Cosmianus heard of this, his hope for the war was restored, and he ordered his commanders to renew the offensive.
As some of the Parthian forces withdrew to attack the Saka, Avitus managed to break through and march down the Tigris-Euphrates, reaching the city of Seleucia by January. Seleucia was a predominately Greek city which was dissatisfied with the Parthians and, therfore, welcomed Avitus. However, Ctesiphon, a major Parthian city which lay just across the Tigris, was not as welcoming and his forces were tied down for some time assaulting the city. Meanwhile, Nepos, who now had to deal with the majority of the western Parthian forces (who were worried about the northern Roman force linking up with the Saka) had won a string of small victories and was assaulting Rhagae.
When Ctesiphon fell, Avitus sent out envoys to the Subkingdoms of Elymais, Characene, and Persis, proposing that they become client states allied to Rome. Only Persis refused, though Characene only accepted to avoid being invaded by the much larger Elymais. Avitus then marched towards Susa and lay siege to the city. Nepos, meanwhile, found himself again in a stalemate, facing the Parthian armies outside of the Caspian gates.
Meanwhile, to the east, the Parthians were battlying the Saka outside of Asaak, to the northeast of Hecatompylos, the Parthian capital. The Parthians pushed back the Saka offensive and persued them through Nisa, Dara, and Merv. By AD 125, the Saka city of Bactra was under seige and Persian forces were attacking the south, hoping to gain territory from the rebellious subkingdom.
Despite all of these losses, the Parthians were holding their own valiantly well against increasingly bad odds. Though they only had one major subkingdom still loyal to the Parthian king, they held their own, inflicting significant losses on the Romans. Granted, most of the battles against the Romans were losses for the Parthians, but in the majority, the Roman forces suffered more casualties. In the east, the Parthians were slowly grinding away at the Saka, while they had all but completely halted the Roman forces.
Susa would not fall until 126 and Avitus would then attack Tabae, which would hold out until 128. Nepos had not gained any ground, though he inflicted more losses on the Parthians. Meanwhile, the Saka had lost Bactra and were on their last legs, even though the Han were pouring more and more support into them, and were being squeezed between the Parthians in the north and the Persians to the south. The Parthians had finally found a commander that could lead them to victory, General Sanabares, and they were optimistic that the course of the war would soon turn.
The war did turn, though it was not to turn in the Parthian's favor. An epidemic suddenly swept through the Parthian's horses, devastating the predominately calvary armies. This disaster enabled Nepos to break through the Caspian Gates and march towards Hecatompylos. Meanwhile, the Saka began to push the Parthians out of their territory, not a difficult task, considering the Parthians were rushing to defend Hecatompylos. To the southeast, Avitus was marching on Persepolis, causing the Persian armies (which were not as dependent on calvary) to also vacate Saka territory.
The year 129 would see both Persepolis and Hecatompylos under seige and the Saka expanding along all of their borders, taking Merv and Dara to the north, and pushing back the Persians to the straits of Hormuz. Sanabares reached Hecatompylos in late 129 and attacked the Romans, forcing them to abandon the siege. Sanabares began to push Nepos' legions back and would have crushed the Romans. However, while retreating, Nepos split his forces into 3 groups. The main group would continue to retreat, while the other two groups would split off to the north and south and would circle around the Parthians.
Sanabares, seeing the size of Nepos' main force, thought that the Romans must have suffered serious casualties and his army surged forward, allowing the two other groups to slip behind them and attack them just as the Parthians began to attack Nepos. Sanabares, realizing that he had been tricked, turned his troops around and charged at the rear attackers. The Parthians managed to break through and head back to Hecatompylos.
To the south, the Persians had managed to push back the Saka to their former borders again, while trying to lift the siege of Persepolis. Persepolis would ultimately fall in 130, allowing Avitus to attack the Persian forces, which, in turn, allowed the Saka to force the Persians back again, crushing the last Persian resistance by late 130.
Meanwhile, Nepos and Sanabares were going back and forth at each other. Nepos would besiege Hecatompylos, Sanabares would attack and break up the Roman forces, which would regroup and drive the Parthians off and besiege the city again, at which point the Parthians would regroup and attack. Avitus sent up half of his forces to assist Nepos, allowing him to hold the siege while attacking the Parthians. It would take until the summer of AD 132 before the city fell, at which point Osroes commited suicide, rather than be captured by the Romans. Upon hearing this, Sanabares met Nepos and surrendered his forces to the mercy of the Roman Empire. The Parthian War was over.
Armenia would become a client kingdom of Rome, as would the neutral Osroene, and the former subkingdoms of Characene and Elymais. The Tigris-Euphrates region would be divided up into the the provinces of Adiabene, just east of Osroene, then Assyria to the south, and then Mesopotamia, further to the south, bordering Characene and Elymais. To the east of Adiabene was the province of Media Inferior. East of that was Media Superior. South of Media Superior and north of Elymais was the province of Susiana. East of Elymais and Susiana lay Persia Superior, and then Persia Inferior, both along the Persian Gulf. East of Media Superior, along the Caspian coast was Hypercania. After that lay Parthia Superior and then Parthia Inferior to the south. South of Parthia Inferior and north of Persia Inferior lay the province of Carmania. East of Parthia Superior was Margiana, with Aria to the south of that. The rest of Parthian territory was now the the Regnum Sakae (kingdom of Saka). Saka was bound by treaty to pay tribute to the Han, as well as promising not to interfere in anyway with trade between its neighbors.
Avitus and Nepos would return to Rome as heros and participated in the greatest triumph Rome had ever seen. In recognition of their achievements, the Senate gave Nepos and Avitus the titles of Parthicus and Persicus, respectively. Cosmianus now had to choose one of the generals as his successor or he would certainly face the wrath of the army. He decided to choose Avitus, as Nepos was too hotheaded and blatantly ambitious, while Avitus was methodical and softspoken, and well liked by the Senate. Cosmianus would rule Rome for another 2 years and then die of old age, leaving the principate to Decimus Viridius Aurelius Avitianus Persicus.