Ahmose unified the country. He was a pharaoh who ruled ancient Egypt 1500 B.C. to 1525 B.C. The Hyksos which were a group of people from the Levant, and became the first pharaoh of upper and lower Egypt.
This is a battle between Egypt and the Babylonians at Carcamesh in northern Syria. This was God showing His power and judgement on Egypt. God allowed them to pass the king of Judah to get to the Battle.