Excerpts from Books and Wikipedia
"Tiglath-Pileser III (...) was a prominent king of Assyria in the eighth century BCE (ruled 745–727 BCE) who introduced advanced civil, military, and political systems into the Neo-Assyrian Empire.
Tiglath-Pileser III seized the Assyrian throne during a civil war and killed the royal family. He made sweeping changes to the Assyrian government, considerably improving its efficiency and security. He created Assyria's first professional standing army." [Wikipedia]