Swallowtail (flag)

In flag terminology, a swallowtail is either The name comes from the forked tail that is a common feature of the swallow species of birds.

Common in the Nordic countries, this swallowtail flag contains a vertical section in the centre of the fly.

In some countries (such as the United States), guidons do not necessarily have a swallow tail.

The military use of the guidon originated from the flags used by cavalry units in Europe.

A variant of the guidon, the hussar cut, was used by German cavalry regiments.