January 14, 352 BC: Phillip II, King of Macedon, launches a minor expedition into Thrace against Cersobleptes, King of the Odrysians in support of Athens.
January 15, 352-March 22, 352: Phillip’s campaign in Thrace is miserable and disasterous, reaching a climactic at the Battle of Odrysia Major, where the Macedonian forces are routed completely.
March 30, 352: Phillip II and Cersobleptes renegotiate a peace and alliance between Macedon and Odrysia, renewing an ancient pact between the two states. Cersobleptes begins the process of Hellenizing his military to a minor degree, introducing the Macedonian Phalanx and heavy armor into his army.
April 3, 352: Cersobleptes finds himself unable to diplomatically unite Thrace, with his brother Amadocus II and the sons of his brother Berisades in control of other fiefs in the region. Unsatisfied with allowing Thrace to remain divided amongst his family and wary of growing foreign threats, the King moves against his kin to reunite his late father’s domain.
April 10, 352: An agent of Amadocus attempts to spear King Cersobleptes in his sleep, but misses and is killed by the king’s bodyguards. Historians will debate for centuries the significance of this situation.
April 20, 352-January 5, 350: The so-called Thracian Wars of Unification continue for two years, and end with the successful unification of the region under the Odrysian State. Amadocus II does not survive the conflict, but Berisades’ oldest son Cetriporis survives after agreeing to be adopted by his uncle Cersobleptes. The King Cersobleptes was then declared High King of All Thrace, with Phillip and the Hellenic League in observance.
January 6, 350: High King Cersobleptes begins the construction of a new capitol city dubbed ‘Germebria’: literally ‘the warm city’. On the same day, Thracian troops march on Byzantion on the Dardanelles.
May 12, 350: Byzantine forces surrender to the Thracian invaders after a five-month siege, having exhausted food reserves and being hit by a plague.
May 15, 350: Thracian armies begin to march north on a campaign of conquest through eastern Dacia.
May 16, 350-September 2, 347: After three years and many deaths, the Dacian tribes are pacified and assimilated into the Thracian Empire, and are granted full citizenship as Thracians, being of the same linguistic and cultural group. In order to manage the varying interests of the various tribes of both Thrace and Dacia are each given representation in the Imperial Council, and organ created by the High King to help him manage the realm.
September 10, 347: Germebria is completed, and dedicated to the Thracoian supreme deity Sabazios.
October 4, 347-February 13, 346: The armies and warbands of the defeated Dacian tribes are assimilated into the Thracian military. The lgiven extra training in preparation for an upcoming campaign into Sarmatia.
February 14, 346: In a move to establish a united Imperial culture, a new order of warrior priests is established, known as the Bathektistai (literally ‘bathing monks’) in dedication to the war goddess Kotys. Those monks not suited to battle serve as a dedicated caste of public servants, while the warrior monks defend important leaders in the Empire and serve as elite shock troops.
March 23, 346: A large Thracian army embarks against the Sarmatian hearthlands. The Sarmatians resist fiercely and the Thracian advance is slow and perilous.
March 24, 346-October 8, 336: The Thracian war in Sarmatia goes well for the High King, and in ten years, nearly half of the Sarmatian territory is owned by Thrace. On October 8th, King Phillip II of Macedon and High King Cersobleptes are assassinated as they celebrated the wedding of Phillip’s relative Alexander 1 of Epiros. The Hellenic world waits in shock as the two greatest major powers of the region found themselves without leaders.
October 9, 336: At a joint ceremony in Pella, Alexander III of Macedon and Cetriporis I of Thrace ascend the thrones of the Macedonian and Thracian Empires respectively. The two Princes agree to a renewed alliance against Persia, the assumed mastermind of their fathers’ assassinations.
October 10, 336-July 13, 335: Alexander III, with auxiliaries provided by his Thracian allies, embarks on a campaign to consolidate his power in the Balkans. The campaign lasts for just under a year, and results in the security of Macedon’s northern border, having crushed the opposing poleis and tribes in the area.
July 14, 335-February 1, 334: The so-called ‘Twin Princes’ of Thrace and Macedonia (being Alexander III and Cetriporis I, respectively) plan and prepare to accomplish the long-held Hellenic dream of conquering the Persian Empire. The plan is to be a primarily Macedonian affair, relying on the Thracian navy for supplies and hoping to rendezvous with the Thracian armies to the north of Asia Minor following their conquest of Sarmatia.
February 2, 334-December 20, 334: As Alexander leads his deadly Macedonian army into Asia Minor, Cetriporis’ northern armies launch a blistering assault against the last elements of opposition in Sarmatia, being composed of Scythian tribes and Greek poleis. Alexander finds great success at the Battle of Granicus and Siege of Halicarnassis, whilst his Thracian allies capture the final Sarmatian stronghold of Chorasima. By the fall of 334, the armies of Macedon are being supplied by Thracian naval power in the Black Sea.
December 21, 334: Alexander III undoes the Royal Knot at Gordium, prophesized long before to be undone only by the next King of Asia. Macedonian forces meet with a small Thracian expeditionary force which arrives by sea.
December 22, 334-January 18, 333: Cetriporis works to expand upon the efforts of his uncle to unify religion in the Thracian Empire, and subtly merges the Thracian supreme deity of Sabazios with the Dacian Monotheistic deity of Zalmoxis/Gebelesis and Sarmatian supreme deity of Huycau. This leads to an increased sense of cohesion amongst the three ethnicities of the Empire.
January 19, 333: The Sarmatian tribes are given representation in the Imperial Council, namely the Alans, Roxolani, Sudini, Tigri, Ossi, Cimmerians, and Bastarnae.
February 5, 333: After crossing the Gates of Cillicia, Alexander III engages Darius III of Persia at the battle of Issus. The Shahanshah attempts to flee the battlefield when his main line crumbles, but is struck by a javelin thrown by a Thracian cavalryman.
April 7, 333-March 12, 332: Alexander and his army establishes control of Syria and the Levant, and concludes the campaign with the capture of the island city of Tyre.
September 20, 332: After advancing towards Egypt mostly unopposed, Thraco-Macedonian forces besiege the loyal fortress of Gaza, which falls on September 20.
October 1, 332: After being greeted in Egypt as liberators, Alexander and his allies found Alexandria-by-Egypt, and Alexander himself is proclaimed the son of Ammon by the priests of Egypt.
October 6, 332-April 18, 331: Not to be eclipsed by the works of his Macedonian ally, Cetriporis works with his vast silver reserves to urbanize and fortify much of his land, as well as preparing his coastlines to accept trade between the Black and Mediterranean seas. During this period, Byzantion becomes known as the ‘second capitol’ of the Thracian Empire because of the vast amounts of trade wealth pouring through its ports.