Cao Zhen vs Drusus the Elder

Cao Zhen was appointed Grand Commander (Da Sima) by Emperor Cao Rui, placing him in charge of all Wei military forces. This appointment made him the highest-ranking military official, responsible for defending against Shu and Wu threats.

Cao Zhen commanded Wei forces against Zhuge Liang's first Northern Expedition. He led a successful defense, repelling Shu attacks and preventing territorial losses. This battle established his reputation as a capable commander against Shu's strategic offensives.

Cao Zhen led a Wei counteroffensive into Shu territory, advancing through the Qinling Mountains. The campaign faced logistical difficulties and was ultimately abandoned due to heavy rains and Shu defenses, resulting in a failed invasion.

Drusus launched a campaign against the Germanic tribes across the Rhine. He defeated the Usipetes and Sugambri, and built a fleet on the Rhine to conduct operations. This campaign established Roman presence east of the Rhine.

Drusus ordered the construction of a canal connecting the Rhine River to the IJsselmeer, known as the Fossa Drusiana. This canal allowed Roman ships to bypass the North Sea coast and reach the German coast more safely, facilitating logistics.

Drusus led a campaign that reached the Elbe River, the furthest east any Roman army had penetrated into Germania. He defeated the Chatti and Cherusci tribes, but was forced to turn back due to supply issues and the onset of winter.

Drusus died from injuries sustained when he fell from his horse while returning from the Elbe campaign. His death at age 29 shocked Rome. Augustus mourned deeply, and Drusus was given a state funeral and posthumous honors.