Date(s) - 19/10/2020
The beginning of the campaigning season in March had been marked by the dancing of the Salii through the streets, the Equirria, the Quinquatrus and the Tubilustrium, so its end in October saw the ceremonies of the October horse and Armilustrium when the army had to
be purified from the dangerous infection that it may have incurred from contact with bloodshed and strangers. This was a festival in honour of Mars; his Salian priests once again danced and sang through the streets, during the sacrifices tubae were sounded, and the arma and ancillia were purified and then put away until the next year. It appears from Plutarch and Varro that the lustratio was performed on the Aventine in an open space called Armilustrium which was the last point in the procession of the Salii.