Earthly Knight in a Fantastical Realm

The 4th son of a Count in the Holy Roman Empire of the 15th Century. Sargon was trained since he could walk to be a knight. A warrior that stands above all others in martial prowess, battle skills, and warcraft. Distinguishing himself throughout the empire in tournaments during his late teens. At the age of 18, he began racking up great achievements in battles against the forces of the East. At 20, he trekked towards yet another battlefield in the East when an ambush drove him to fall into a deep cavern. When he awoke, he was not in any land know to him and felt a foreign power all around him. - This is the first-ever novel I've written. I will be trying my best with it. Support is appreciated.