Vatican City
The name was first used in the Lateran Treaty, signed on 11 February 1929, which established the modern city-state. The name is taken from Vatican Hill, the geographic location of the state. "Vatican" is derived from the name of an Etruscan settlement, "Vatica" or "Vaticum" meaning garden, located in the general area the Romans called "vaticanus ager", "Vatican territory".
Military in Vatican City
The Papal Gendarmerie Corps () was formed in 1816 by Pope Pius VII, originally under the name of Papal Carabinieri Corps. The unit was formed as a military police unit. In 1849 Pope Pius IX renamed it as the Papal Velites Regiment, and subsequently as the Papal Gendarmerie Corps. It saw active military engagements in the battles which culminated in the abolition of the Papal States. It survived (greatly reduced in size) into the period of the Vatican City State, as a "de facto" Vatican military unit from 1929 to 1970, providing internal security.