Dacian is an extinct language generally believed to be a member of the Indo-European language family that was spoken in the ancient region of Dacia.

two military campaigns fought between the Roman Empire and Dacia during Emperor Trajan's rule.

a military standard used by troops of the ancient Dacian people, which can be seen in the hands of the soldiers of Decebalus in several scenes depicted on Trajan's Column in Rome, Italy.

The history of Dacian warfare spans from c. 10th century BC to 2nd century AD in the region defined by Ancient Greek and Latin historians as Dacia, populated by a collection of Thracian, Ionian, and Dorian tribes.

a conflict between the Roman Empire and the Dacian Kingdom, which had invaded the province of Moesia.