During the 7th century AH(13th century CE) the Khwarezmid Empire is at its peak. The Empire had captured most of the territories of Khurasan, Iraq, and Syria which actually belong to the Seljuq Empire.
Meanwhile, when they are going ahead and planning to conquer all the Muslim territories of Asia, their Empire was torn into pieces by Genghis Khan. That was the time when Turk tribes fled to the south and, some of them settled in Iran and Syria and found their dynasties in 7th and 8th century AH and become famous as Turkmani.
In south many tribes battled with Egyptians but had no luck there so fled again and reunited with Seljuqs in Asia minor.
Among those wandering Tribes, there was a tribe of Ertuğrul Gazi headed by his father named Suleman Shah. Leaving Khwarazm they were moving towards Syria while crossing the River Furat many tribe men were drowned among them was Suleman shah.
At that point, the tribe got scattered, remaining members of that tribe in the leadership of Ertuğrul and his brother Dündar continued there journey and joined with Seljuqs in Asia Minor
Sultan Alauddin Seljok
Those 400 families in the command of Ertuğrul, continued their journey. On their way to Konya [the capital of Sultan Alauddin’s Empire], come across a battleground near Angora.
Ertuğrul was unfamiliar with both armies, but seeing one army weak and losing the ground he decided to help them.
He collected his men and attacked, Ertugrul’s fearless and furious attack was so helpful that the other army lost the battle and ran for there lives.
later he came to know that, it was Seljoq’s army and those retreated were Tartars.
We cannot call it a foundation of the Ottoman Empire but it’s the first step towards the foundation of the Ottoman Empire.
Ertuğrul and his tribe started a new life. Sogut borders with Byzantine Empire and they attack the Seljuks from time to time, but when Sogut comes under the supervision of Ertuğrul the Byzantines were heavily damaged during battles and they dare not to attack the Sogut.
Under the influence of Ertuğrul leadership, many Turk tribes from Asia Minor joined him in battles and his impact flourished in the neighboring areas.
Sultan Alauddin likes Ertuğrul
Maybe an increased hold of Ertugrul troubled Sultan Alauddin but Seljuk Empire was on the verge of decline. The conspiracies of the court men had considerably weakened the empire. However, in Konya the grandeur of the Seljuk’s of Rum is notable but its effectiveness is not as before.
On the one side, the tartars had conquered the southern and eastern states, in North and east the Christian, Eastern Roman Empire, had taken back most of the areas of their ancient provinces.
Borders areas of the Seljuk empire are constantly attacked by Tartar and Byzantines. In this Situation, the Ertugrul was a sigh of relief for Sultan Alauddin Seljuk.
Conquest of Ertuğrul Gazi
He was granted more lands and areas by Sultan on his bravery and conquest against Christians and Tartars. He was the most trustworthy commander of Sultan Seljuk’s army. After winning the joined battle against tartars and Byzantines the Sultan Alauddin granted him the city of Bursa and named the area ” Sadar-e- Sultani.
Ertugrul Conquered the castles of the many Rebellion local landlords, in the surrounding of the city, He fought all his life and keep struggling against the Tartars and Byzantines, actually, he paved the Way for the Ottoman Empire.
Later His Son Osman-I laid the foundation of the Ottoman Empire in the town of Sogut.
Battle flag of Sultan Alauddin was red which contains a white crescent and star, The Ertugrul adopted the same flag, and to this day turkey holds this Flag.
Death and Burial Place
Ertuğrul Gazi died in 687 AH (1288 CE) and buried in Sogut City. A tomb and mosque dedicated to Ertuğrul said to have been built by Osman I at Söğüt, The current mausoleum was built by Sultan Abdul Hamid II in the late 19th century. The town of Söğüt celebrates an annual festival to the memory of the early Osmans.