Military forces:
Pontifical Swiss Guard Corps (Corpo della Guardia Svizzera Pontificia); the Gendarmerie Corps of Vatican City is a police force that helps augment the Pontifical Swiss Guard during the Pope’s appearances, as well as providing general security, traffic direction, and investigative duties for the Vatican City State
(2019)
Military service age and obligation:
Pontifical Swiss Guard Corps (Corpo della Guardia Svizzera Pontificia): 19-30 years of age for voluntary military service; no conscription; must be Roman Catholic, a single male, and a Swiss citizen, with a secondary education
(2019)
Military - note:
defense is the responsibility of Italy