The Legio XIIII Gemina Martia Victrix, one of the most famous legions in Roman history, was founded by Octavian, who would later be known as Augustus, sometime after 41 BC. Throughout its distinguished history, this legion distinguished itself on the battlefield, accumulating honors and recognition for its bravery and effectiveness in combat. Its participation was crucial in significant events such as the conquest of Britain, where its discipline and military skill were decisive, as well as in the Dacian Wars led by Trajan, the Marcomannic Wars under the command of Marcus Aurelius, and the conquest of the capital Ctesiphon during the reign of Septimius Severus.

The name Gemina, meaning "twin" in Latin, suggests that the legion was the result of the merging of two previous legions, one of which fought alongside Julius Caesar in the siege of Alésia. The titles Martia Victrix, which translate to "blessed by Mars" and "Victorious," were awarded by Emperor Nero in recognition of its triumphs, particularly following the rebellion of Boudica. In the 2nd century AD, the legion received additional honors of Tertia Pía ("three times pious") and Tertia Fidelis ("three times loyal") from Trajan, reflecting its loyalty and devotion to the Empire.

The distinctive emblem of the Legio XIIII Gemina Martia Victrix was the Capricorn, a zodiacal symbol associated with Augustus, which also adorned the insignias of other legions he founded. This emblem not only represented the astrological connection to the first emperor of Rome, but also symbolized the tenacity, discipline, and ambition that characterized the legion and its soldiers.