Introduction
How is the Military in Spain and how does it work to maintain Sucity and fight terrorism? In terms of Military and security forces, we have the Spanish Armed Forces (Fuerzas Armadas de España): Army (Ejército de Tierra), Spanish Navy (Armada Espanola; includes Marine Corps), Air and Space Force (Ejército del Aire y del Espacio), Emergency Response Unit (Unidad Militar de Emergencias); Civil Guard (Guardia Civil) (2024).
In Spain, the Spanish Armed Forces have a wide variety of responsibilities, including protecting the country’s national interests, sovereignty, and territory, providing support during natural disasters, and fulfilling Spain’s responsibilities to European and international security; the military conducts operations worldwide, and its air, ground, and naval forces participate in a variety of EU-, NATO-, and UN-led missions; Spain joined NATO in 1982 and is fully integrated into the NATO structure; it routinely conducts exercises with EU and NATO partners, and hosts one of NATO’s two combined air operations centers 

the military is organized into commands for air, cyberspace, joint, land, maritime, and space operations; it maintains garrisons in the Balearic Islands, the Canary Islands, Ceuta, and Melilla

the Spanish military has a rich history that goes back to the 13th century; the Army has an infantry regiment, formed in the 13th century, that is considered the oldest still active military unit in the Western world; the Marine Corps, which traces its roots back to 1537, is the oldest naval infantry force in the World; Spain created a Spanish Legion for foreigners in 1920, but early on the Legion was primarily filled by native Spaniards due to difficulties in recruiting foreigners, and most of its foreign members were from the Republic of Cuba; it was modeled after the French Foreign Legion and its purpose was to provide a corps of professional troops to fight in Spain's colonial campaigns in North Africa; in more recent years, it has been used in NATO peacekeeping deployments; today’s Legion includes a mix of native Spaniards and foreigners with Spanish residency (2024)
Security and military information of Spain
Military and security service personnel strengths approximately 118,000 active-duty troops (70,000 Army; 25,000 Navy, including about 5,500 marines; 23,000 Air and Space Force); 80,000 Guardia Civil (2024)
Military equipment inventories and acquisitions the military's inventory is comprised of domestically produced and imported Western weapons systems; in recent years, leading suppliers have included France, Germany, and the US; Spain's defense industry manufactures land, air, and sea weapons systems and is integrated within the European defense-industrial sector (2023)
Military service age and obligation 18 years of age for voluntary military service for men and women; 24-36 month initial obligation; women allowed to serve in all branches, including combat units; no conscription (abolished 2001), but the Spanish Government retains the right to mobilize citizens 19-25 years of age in a national emergency; 18-58 for the voluntary reserves (2024). note 1: as of 2024, women comprised about 13% of the military's full-time personnel

note 2: the military recruits foreign nationals with residency in Spain from countries of its former empire, including Argentina, Costa Rica, Bolivia, Colombia, Chile, Cuba, Dominican Republic, Ecuador, El Salvador, Equatorial Guinea, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Uruguay, and Venezuela
Military deployments Spain has up to 3,000 military personnel deployed on 17 missions supporting the EU, NATO, and the UN on four continents, as well as naval missions in the Mediterranean and the seas off the Horn of Africa; its largest deployments are up to 700 troops in Lebanon (UNIFIL) and about 1,700 personnel in Eastern Europe supporting NATO missions in Latvia, Romania, and Slovakia (2024).  
Military expenditures
Military Expenditures 2024 1.3% of GDP (2024 est.)
Military Expenditures 2023 1.2% of GDP (2023)
Military Expenditures 2022 1.2% of GDP (2022)
Military Expenditures 2021 1% of GDP (2021)
Military Expenditures 2020 1% of GDP (2020)
Terrorism
In Spain, the different Terrorist group(s) inlcude: Islamic State of Iraq and ash-Sham (ISIS); al-Qa’ida
All Important Facts about Spain

Want to know more about Spain? Check all different factbooks for Spain below.

Spain is found in Southern Europe