Vexillum

The vexillum (/vɛkˈsɪləm/; plural vexilla) was a flag-like object used as a military standard by units in the Ancient Roman army.

The word vexillum is a diminutive of the Latin word, velum, meaning a sail, which confirms the historical evidence (from coins and sculpture) that vexilla were literally "little sails": flag-like standards. In the vexillum, the cloth was draped from a horizontal crossbar suspended from the staff. That is unlike most modern flags in which the 'hoist' of the cloth is attached directly to the vertical staff. The bearer of a vexillum was known as a vexillarius or vexillifer.

Just as in the case of the regimental colors or flag of Early Modern Western regiments, the vexillum was a treasured symbol of the military unit that it represented and it was closely defended in combat. It was the main standard of some types of unit, especially cavalry; however, it was regarded as less important than a legion's aquila, or eagle, and may have represented a subdivision of a legion. However, that is not entirely clear from surviving sources (see vexillatio).

The only existent Roman military vexillum is dated to the first half of the 3rd century AD and is housed in the Pushkin Museum of Fine Arts. It is an almost square piece of coarse linen cloth with the image of the goddess Victoria and measures 47×50 cm. The lower edge has remains of a fringe. The vexillum was once attached to a piece of reed wood. It is unknown to which military unit the vexillum belonged. The vexillum was found in Egypt shortly before 1911, but its exact provenance is also unclear.

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