Nero Claudius Drusus Germanicus (January 14, 38 BC[2] – summer of 9 BC[3]), born Decimus Claudius Drusus,[1] also called Drusus Claudius Nero,[4] Drusus, Drusus I, Nero Drusus, or Drusus the Elder was a Roman politician and military commander. He was a patrician Claudian on his legal father’s side but his maternal grandmother was from a plebeian family. He was the son of Livia Drusilla and the legal stepson of her second husband, the Emperor Augustus. He was also brother of the Emperor Tiberius, father to both the Emperor Claudius and general Germanicus, paternal grandfather of the Emperor Caligula, and maternal great-grandfather of the Emperor Nero.
He launched the first major Roman campaigns across the Rhine and began the conquest of Germania, becoming the first Roman general to reach the Weser and Elbe rivers. In 12 BC, Drusus led a successful campaign into Germania, subjugating the Sicambri. Later that year he led a naval expedition against Germanic tribes along the North Sea coast, conquering the Batavi and the Frisii, and defeating the Chauci near the mouth of the Weser. In 11 BC, he conquered the Usipetes and the Marsi, extending Roman control to the Upper Weser. In 10 BC, he launched a campaign against the Chatti and the resurgent Sicambri, subjugating both. The following year, while serving as consul, he conquered the Mattiaci and defeated the Marcomanni and the Cherusci, the latter near the Elbe. However, Drusus died later that year, depriving Rome of one of its best generals.
