What is the name of the relief column that commemorates the Dacian War?

The relief column that commemorates the Dacian War is known as the Column of Trajan. This monumental column was commissioned by Emperor Trajan in the early 2nd century AD to celebrate his victory over the Dacians in two wars fought between 101 and 106 AD. The column features a continuous frieze that spirals around its shaft, depicting detailed scenes of the campaigns and intricate carvings that serve as a historical narrative of the battles, military strategies, and even the daily life of the Dacians and Roman soldiers involved.

The significance of the Column of Trajan extends beyond just its commemorative purpose; it also serves as an important source of historical information about Roman military attire, weapons, and tactics during the time. Additionally, it represents the height of Roman art and engineering, showcasing the skill and creativity of Roman sculptors.

Other columns mentioned, such as those of Marcus Aurelius and Antoninus Pius, serve different commemorative purposes or were erected for other emperors. While the Column of Phocas, although a historical monument located in the Roman Forum, does not commemorate a military victory, making the Column of Trajan the accurate choice for this particular question.