Introduction
How is the Military in Mexico and how does it work to maintain Sucity and fight terrorism? In terms of Military and security forces, we have the the Mexican Armed Forces (Fuerzas Armadas de México) are divided between the Secretariat of National Defense and the Secretariat of the Navy:

Secretariat of National Defense (Secretaria de Defensa Nacional, SEDENA): Army (Ejercito), Mexican Air Force (Fuerza Aerea Mexicana, FAM); Secretariat of the Navy (Secretaria de Marina, SEMAR): Mexican Navy (Armada de Mexico (ARM), includes Naval Air Force (FAN), Mexican Naval Infantry Corps (Cuerpo de Infanteria de Marina, Mexmar or CIM))

Secretariat of Security and Civilian Protection/SEDENA: National Guard (2024).
In Mexico, the Mexican military is responsible for defending the independence, integrity, and sovereignty of Mexico, as well as providing for internal security, disaster response, humanitarian assistance, and socio-economic development; in recent years, internal security duties have been a key focus, particularly in countering narcotics trafficking and organized crime groups, as well as border control and immigration enforcement; the constitution was amended in 2019 to grant the president the authority to use the armed forces to protect internal and national security, and courts have upheld the legality of the armed forces’ role in law enforcement activities in support of civilian authorities through 2028; the military also provides security for strategic facilities, such as oil production infrastructure, and administers most of the country's land and sea ports and customs services, plus a state-owned development bank; in addition, President LÓPEZ OBRADOR placed the military in charge of a growing number of infrastructure projects, such as building and operating a new airport for Mexico City and sections of a train line in the country’s southeast (2024)
Security and military information of Mexico
Military and security service personnel strengths information varies; approximately 220,000 armed forces personnel (160,000 Army; 10,000 Air Force; 50,000 Navy, including about 20,000 marines); approximately 110,000 National Guard personnel (2024)
Military equipment inventories and acquisitions the Mexican military inventory includes a mix of domestically produced and imported weapons and equipment from a variety of mostly Western suppliers, particularly the US; a considerable portion of its inventory, such as ships and fighter aircraft, are older, secondhand items from the US; over the past decade, the Mexican military has made efforts to acquire more modern equipment; Mexico's defense industry produces some naval vessels and light armored vehicles, as well as small arms and other miscellaneous equipment (2023)
Military service age and obligation 18 years of age (16 with parental consent) for voluntary enlistment for men and women; 18 years of age for compulsory military service for men (selection for service determined by lottery); conscript service obligation is 12 months; those selected serve on Saturdays in a Batallón del Servicio Militar Nacional (National Military Service Battalion) composed entirely of 12-month Servicio Militar Nacional (SMN) conscripts; conscripts remain in reserve status until the age of 40; cadets enrolled in military schools from the age of 15 are considered members of the armed forces; National Guard: single men and women 18-30 years of age may volunteer (2023). note: as of 2023, women comprised about 10% of the active-duty Army, Air Force, and Navy, and about 14% of the National Guard
Military deployments .
Military expenditures
Military Expenditures 2023 0.6% of GDP (2023 est.)
Military Expenditures 2022 0.7% of GDP (2022 est.)
Military Expenditures 2021 0.7% of GDP (2021 est.)
Military Expenditures 2020 0.6% of GDP (2020 est.)
Military Expenditures 2019 0.5% of GDP (2019 est.)
All Important Facts about Mexico

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

Mexico is found in North America