Redan is a feature of fortifications. It is a work in a V-shaped salient angle towards an expected attack. It can be made from earthworks or other material.

Mistra Battery, formerly also known as Despirasse Battery, is an artillery battery in Mistra Bay, Mellieħa, Malta. It was built by the Order of Saint John in the 18th century as one of a series of coastal fortifications around the coasts of the Maltese Islands.