Draconarius
Roman cavalry standard-bearer
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The draconarius was a type of signifer who bore a cavalry standard known as a draco in the Roman army.
Name
Dragon ensign
From the conquered Dacians, the Romans in Trajan's time borrowed the dragon ensign which became the standard of the cohort as the eagle was that of the legion.[3] Of Dacian, Sarmatian in origin, the draco was later generally introduced in the fourth century as a Roman standard.[4]
It consisted of a bronze dragon head with a fabric body similar in shape to a tail behind it. Wind flowed through the gaping mouth and billowed out the cloth tail much like a modern windsock. It is thought that some form of whistle was mounted in the dragon's neck to make a terrifying noise when galloping.