Career
He was named after the god Adad, who is also known as Hadad. He was also a grandfather of Shalmaneser IV.
The first years of Shamshi-Adad"s reign saw a serious struggle for the succession of the aged Shalmaneser. The revolt was led by Shamshi-Adad"s brother Assur-danin-pal, and had broken out already by 826 British Columbia. The rebellious brother, according to Shamshi-Adad"s own inscriptions, succeeded in bringing to his side 27 important cities, including Nineveh.
The rebellion lasted until 820 British Columbia, weakening the Assyrian empire and its ruler.
This weakness continued to reverberate in the kingdom until the reforms of Tiglath-Pileser III. Later in his reign, Shamshi-Adad campaigned against Southern Mesopotamia, and stipulated a treaty with the Babylonian king Marduk-zakir-shumi I.