The phrase "Salah al-Din Battalions" refers to a militant group that has been active in Syria and Iraq, and is believed to be connected to terrorist organizations. However, there are a number of synonyms that are commonly used to refer to these forces. Some of the most common include the "Salahuddin Brigade," the "Salahudin Division," and the "Salah al-Din Brigade." Other names that have been used include the "Islamic State Brigade," the "al-Nusra Front Brigade," and the "Jabhat al-Nusra Brigade." Many of these names reflect the group's connections to various jihadist movements, and indicate the level of danger that they pose to the region.