IDF Nahal Haredi -Ultra Orthodox. Typically, each IDF unit (yehida) has its own shoulder tag. Shoulder tags consist of a long section and a tip, which can be one of four shapes: a circle (commands, directorates and air force units except anti-aircraft), a square (Golani Brigade), a diamond, or a shield-like shape (most common). The Netzah Yehuda Battalion (also known as Nahal Haredi נחל החרדי) is a battalion in the Kfir Brigade of the Israel Defense Forces (IDF). The purpose of the unit is to allow religious Israelis to serve in the IDF in an atmosphere conducive to their religious convictions. The battalion's main action area is the Jordan valley.