Once upon a time, there was a big battle called the Battle of Ankara. It happened a long time ago, in the year 1402. There were two armies, one led by a man called Tamerlane and another led by a man called Bayezid I.
Now, both of these guys were rulers of big empires and they didn't like each other very much. They had some arguments about who should be in charge of a part of the world called Anatolia. Both of them wanted to control it.
So, they decided to have a big fight to settle things once and for all. Tamerlane had a really big army, with soldiers from all over his empire. Bayezid I also had a big army, but not as big as Tamerlane's.
The two armies met in a place called Ankara, which is in modern-day Turkey. They fought for a really long time, and it was very intense. The soldiers were using swords and bows and arrows to try and defeat the other side.
Eventually, Tamerlane's army won the battle. They were able to capture Bayezid I and take him prisoner. Tamerlane was a very mean guy, and he did some really terrible things to Bayezid I while he was his prisoner.
The Battle of Ankara was a very important moment in history because it changed who was in charge of the Anatolia region. Tamerlane's victory meant that he became more powerful and many people were afraid of him. It also weakened the Ottoman Empire, which was the empire that Bayezid I ruled.
So, that's the story of the Battle of Ankara. It was a big fight between two very powerful people that changed history forever.