Nebuchadnezzar II, also Nebuchadrezzar II, meaning "Nabu, watch over my heir", was the second king of the Neo-Babylonian Empire, ruling from the death of his father Nabopolassar in 605 BC to his own death in 562 BC. Often titled Nebuchadnezzar the Great, he is regarded as the empire's greatest king, famous for his military campaigns in the Levant and their role in Jewish history, and for his construction projects in his capital of Babylon, including the Hanging Gardens of Babylon. Ruling for 43 years, Nebuchadnezzar was the longest-reigning king of the Babylonian dynasty. By the time of his death, he was among the most powerful rulers in the world.
Possibly named after his grandfather of the same name or after Nebuchadnezzar I, one of Babylon's greatest warrior-kings, Nebuchadnezzar II had already secured renown for himself during his father's reign, leading armies in the Medo-Babylonian conquest of the Assyrian Empire. At the Battle of Carchemish in 605 BC, Nebuchadnezzar inflicted a crushing defeat on an Egyptian army led by Pharaoh Necho II and ensured that the Neo-Babylonian Empire would succeed the Neo-Assyrian Empire as the dominant power in the ancient Near East. Shortly after this victory, Nabopolassar died and Nebuchadnezzar became king.