In 10 BC, he launched a campaign against the Chatti and the resurgent Sicambri, subjugating both. In 11 BC, he conquered the Usipetes and the Marsi, extending Roman control to the Upper Weser. Later that year he led a naval expedition against Germanic tribes along the North Seacoast, conquering the Batavi and the Frisii, and defeating the Chaucinear the mouth of the Weser. In 12 BC, Drusus led a successful campaign into Germania, subjugating the Sicambri. 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. He was also brother of the Emperor Tiberius, father of the Emperor Claudius, paternal grandfather of the Emperor Caligula, and maternal great-grandfather of the Emperor Nero. He was the son of Livia Drusilla and the legal stepson of her second husband, the EmperorAugustus. He was a patrician Claudian on his legal father's side but his maternal grandmother was from a plebeian family.

Nero Claudius Drusus Germanicus (January 14, 38 BC – Summer of 9 BC), born Decimus Claudius Drusus also called Drusus Claudius Nero, Drusus, Drusus I, Nero Drusus, or Drusus the Elder was a Roman politician and military commander.

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