Swallowtail (flag)

In flag terminology, a swallowtail is either

1. a V-shaped cut in a flag that causes the flag to end in two points at the fly; or
2. any flag which has this V-shaped cut.

The name comes from the forked tail that is a common feature of the swallow species of birds.

• Nautical signal flag for "A"

• Naval ensign of Poland

• Naval ensign of Germany