Emperor Jimmu vs Saloninus

Jimmu led the Eastern Expedition from Hyuga (southern Kyushu) eastward, conquering territories through battles such as the Battle of Usa and the Battle of Takachiho. This campaign is described in the Nihon Shoki and Kojiki as the founding military conquest of Japan.

According to Japanese mythology, Emperor Jimmu became the first emperor of Japan in 660 BC after leading a military campaign from Kyushu to Yamato. He is said to have established the imperial dynasty at Kashihara, unifying the warring clans under his rule.

After his conquest, Jimmu was enthroned as emperor at the Kashihara Palace in Yamato (present-day Nara Prefecture) on the first day of the first month of 660 BC. This event is considered the traditional founding date of the Japanese imperial line.

According to legend, Jimmu received the Three Sacred Treasures (the sword Kusanagi, the mirror Yata no Kagami, and the jewel Yasakani no Magatama) from the gods, which became the imperial regalia symbolizing the emperor's divine right to rule Japan.

Emperor Jimmu died in 585 BC at the age of 126 according to traditional accounts. He was later deified as a kami (spirit) in Shinto, and his tomb is traditionally located in the Unebiyama area of Nara Prefecture. His legacy as the founder of Japan's imperial line continues to be celebrated.

Saloninus was appointed as Caesar (junior emperor) by his father Gallienus, who ruled the western provinces. This elevated Saloninus to the imperial succession and placed him in charge of Gaul under the supervision of the praetorian prefect Silvanus.

After Postumus rebelled and killed the co-emperor's guardian Silvanus, Saloninus was besieged in Colonia Agrippina (Cologne). The city fell to Postumus's forces after a short siege.

Following the capture of Colonia Agrippina, Saloninus was executed on the orders of Postumus, the Gallic usurper. His death ended the legitimate imperial presence in Gaul and solidified Postumus's control over the breakaway Gallic Empire.