Main Divisions in the Book of Daniel

Daniel is divided into two sections of six chapters each. Daniel 1-6 are largely historical, explaining how Daniel came to be in the court of Nebuchadnezzar and of his rise to power. It tells of Nebuchadnezzar's dream of the image which Daniel interpreted to refer to the current kingdom and three world powers which would arise after it and of the kingdom of God "a kingdom which shall never be destroyed" which would arise during the era of the last of these great empires. This section also includes the account of the deliverance of Shadrach, Meshach, and Abednego from the fiery furnace and of the handwriting on the wall which spelled out the defeat of Belshazzar at the hands of the Medes and the Persians. The second section, Daniel 8-12, describes visions which Daniel received concerning the great world powers of the future and the kingdom of God.

Link: https://bible-history.com/old-testament/bookofdaniel