when did the hittites start
- c. 1700 BCE. The Hittites invade the region of the Hatti and begin a systematic campaign against them. The great city of Hattusa is sacked and destroyed. 1650 BCE. Under the Hittite Warrior-King Hattusili, campaigns are carried to completion subjugating the Hatti. Hattusa is re-built as the Hittite capital.