الحرس السويسري
Foreign military service was outlawed by the first Swiss Federal Constitution of 1848 and a federal Law of 1859, with the only exception being the Pontifical Swiss Guard (; ) stationed in Vatican City. The modern Papal Swiss Guard serves as both a ceremonial unit and a bodyguard. Established in 1506, it is one of the oldest military units in the world. It is also the smallest army in the world.