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"I am Lord of Asia. Bow before me...or die."-Timur, in a letter addressed to the Ottoman Sultan Mehmed I "the Conqueror"
1394-1397: George Komnenos returns to Constantinople and is promptly made civilian governor of Optimates (Bithynia), a wealthy, prosperous theme far away from any potential war zone, and is shunted off to Nicaea. Very little is known about his conduct as governor, but it is known that when his sister dies in 1394, he takes full responsibility for the upbringing of his fourteen year old nephew Demetrios Komnenos (his father had died in 1383, after which George helped his sister with a small stipend. Demetrios also takes the last name of his mother, as it is more prestigious than his father’s claim as a descendant of the Emir of Kayseri.) George makes sure he receives the finest military training possible.
In 1396 Hungary and the Empire sign the historic treaty of Dyrrachium, regarding respective spheres of influences in the Balkans. Bulgaria and Serbia are to be buffer states to preserve peace between the two powerhouses of the Balkans and neither is to annex any part of those two states without the other’s permission. The Empire also promises not to contest Hungarian attacks on Vlachia, provided that the Vlachs are allowed freedom of worship with their own churches and clergy, and are allowed to emigrate freely to the Empire if they wish to do so.
Also the Empire drops its own claims and recognizes Hungarian claims to Dalmatia from Istria to Cattaro (Venice controls the territory in question). In exchange it is written in the treaty that “If, by the grace of God, the most illustrious Emperor of the Romans should conquer the city of Venice, that city, along with all associated Italian territories west of Gorz, along with all Venetian possessions unbounded by the Adriatic Sea, will be considered the rightful property of the Roman Empire, and of the Roman Empire alone.”
The Ottomans, in the course of their invasion of the Iranian Plateau, finally make contact with the mysterious warlord known as Timur. Born in 1338 in Samarkand as a member of the Suldus tribe, he spent most of his life establishing himself as leader of the Chagatai Khanate. Then in order to consolidate his rule and distract discontented elements, he embarked on a campaign of conquest.
After first humbling the rulers of Moghulistan, he crippled the Blue Horde by sacking its capital of Sarai in 1388, just as the star of Novgorod is beginning its ascent. He then turns his attention south, overwhelming the minor states of Persia that have managed thus far to avoid being annexed by the Jalayirids because of their preoccupation with the Ottomans. Once those were conquered he turned his attentions to the Jalayirids themselves.
In the summer of 1395, an Ottoman army is besieging Mazandaran when Timur’s main force arrives. He will not tolerate a rival in Persia and peremptorily demands that the Turks withdraw. When the Ottomans refuse, he annihilates their army and take Mazandaran. The next year he seizes Gilan and orders raids to commence on Ottoman possessions in Persia.
1398-1400: A crusade is launched against the Marinids, made possible by a truce in the Ninety Years War. Contingents from England, France, Germany, Italy, and even 300 men from Denmark join with the Castilian army at Toledo in 1398. Both Portugal and Aragon launch supporting offensives. The Crusade marches south, annihilating a couple of minor Marinid detachments and rejoices at the news of 4,000 Marinids killed in a failed attack on Aragonese Oran.
At Merida, the French knights in the crusading vanguard spot another small force of Marinids and immediately attack. They finish cutting the Muslims to pieces just in time to see the main Marinid army engulf them and wipe most of the French contingent out. The Marinids then attack the demoralized crusaders and score a crushing victory, moving on to besiege Toledo.
Marinid success however ends there. While the Portuguese offensive is rolled back to the Tagus, the Aragonese fleet, backed by Pisan and Papal galleys, succeeds in capturing Valencia in a surprise attack. And then there is Toledo. From its towers newly installed bombards roar down hellfire on the Marinid besiegers; wave after wave of Moorish soldiers hurl themselves futilely at the walls, clambering over the corpses of their fallen comrades. Roger de Flor, a participant and chronicler of the siege, optimistically called the Rock of Toledo “the graveyard of the Moorish people.”
Mining is of no use either. A vicious subterranean battle is fought between the Castilians and Marinids, in which the Castilians decidedly have the better of the exchange. On September 2, 1399, the Castilians detonate the first known gunpowder mine in history, wiping out five Marinid trebuchets and three hundred men. Two weeks later the siege is lifted.
In 1398 Timur takes Fars, the Jalayirid capital. Almost immediately he begins making preparations for the invasion of Mesopotamia. Cavalry raids are conducted almost daily while a Timurid army captures Hormuz. Sultan Mehmed I, called the Conqueror for his conquests in Armenia and eastern Arabia, conducts counter-raids but keeps his main force in Mesopotamia; he wishes to fight Timur on ground of his own choosing.
In 1399 Timur obliges him, invading Mesopotamia with over eighty thousand men. At Kirkuk Mehmed is defeated but retires in good order with minor casualties, although the city is lost. He gathers reinforcements, eventually commanding an army sixty five thousand strong; by that point Timur is almost at Baghdad.
In order to compensate for his numerical inferiority Mehmed decides to boost his men’s morale by fighting, as close as possible, on the same ground Bayezid I fought on during the Battle of the Gates. Thus Turkish morale is exceedingly high on November 3, when battle is joined.
It is not enough. The ferocious onslaught of the Timurid regiments break the Ottoman center as wave after wave of Mongol and Tartar horsemen hurl volleys into the Turkish flanks, overwhelming the flank guards by sheer weight of numbers. Mehmed throws in the reserves, halting the Timurid advance. Rallying his men with his presence, the Turks begin pushing the Timurids back, until a stray arrow knocks Mehmed from his horse. He is not dead, only unconscious, but the rumor of his death spreads wildly through the army. Panic begins to set in and Timur senses it, throwing in his own reserves. The Ottoman army shatters; Baghdad capitulates the next day.
Mehmed wakes up on November 5. Gathering together what he can of his army, he falls back to Basra. Timur, thinking he is no longer a threat, concentrates on capturing northern Mesopotamia; Mosul falls in February 1400. He wants the region secure as reports of Mameluke military buildups in northern Syria have him concerned.
When he is at Mosul, he is met by a delegation from Constantinople. After congratulating him on his victory over Mehmed, a treaty is made. Rhomanion will pay Timur 120,000 hyperpyra a year in exchange for not attacking the Empire. Konstantinos does this for two reasons. While George was stuck fighting in Italy, Konstantinos was freed of his influence. Since then he has made sure to remain so. Realizing that the two wars of his reign were ultimately counterproductive, he wants no more. Also he realizes that the money he gives to Timur will likely be spent on killing Mamelukes. However the view of many that Konstantinos is a weak old man is confirmed by these events.
After the treaty is signed, Timur moves with lightning speed into Mameluke Syria. He captures Homs in May, defeats a Mameluke army meant to relieve the city, and seizes Damascus in August. The main army then swings toward the coast, where most of the towns surrender immediately. Tyre foolishly tries to resist and is sacked in October.
On the other end of the Mediterranean, the Marinids fail to retake Valencia despite a four month siege due to their inability to implement an effective naval blockade. While the Marinid fleet is powerful enough to secure the Pillars and keep the Morocco-Granada line open, otherwise it is outmatched by Christian sea power.