Introduction
How is the Military in Rwanda and how does it work to maintain Sucity and fight terrorism? In terms of Military and security forces, we have the Rwanda Defense Force (RDF; Ingabo z’u Rwanda): Rwanda Army (Rwanda Land Force), Rwanda Air Force (Force Aerienne Rwandaise, FAR), Rwanda Reserve Force, Special Units

Ministry of Internal Security: Rwanda National Police (2024).
In Rwanda,

the RDF is widely regarded as one of East Africa’s best trained and most experienced militaries; the Army is relatively large with four divisions that are mostly comprised of light infantry brigades; it also has separate artillery, presidential guard, and special operations brigades; the Air Force has a small inventory of combat helicopters and a handful of transport aircraft

the RDF’s principle responsibilities are ensuring territorial integrity and national sovereignty and preventing infiltrations of illegal armed groups from neighboring countries, particularly the Democratic Republic of the Congo (DRC); since 2021, Rwanda has deployed troops to the border region with the DRC to combat the rebel Democratic Forces for the Liberation of Rwanda (FDLR), which it has accused the DRC of backing; the RDF has been accused by the DRC, the UN, and the US of making incursions into the DRC and providing material support to the March 23 Movement (M23, aka Congolese Revolutionary Army) rebel group, which has been fighting with DRC troops and UN peacekeeping forces; the RDF also participates in UN and regional military operations; over 6,000 RDF personnel are deployed in the Central African Republic, Mozambique, and /country/Sudan">Sudan">South Sudan 

the Rwandan Armed Forces (FAR) were established following independence in 1962; after the 1990-1994 civil war and genocide, the victorious Tutsi-dominated Rwandan Patriotic Front's military wing, the Rwandan Patriotic Army (RPA), became the country's military force; the RPA participated in the First (1996-1997) and Second (1998-2003) Congolese Wars; the RPA was renamed the Rwanda Defense Force (RDF) in 2003, by which time it had assumed a more national character with the inclusion of many former Hutu officers as well as newly recruited soldiers (2023)
Security and military information of Rwanda
Military and security service personnel strengths approximately 33,000 active RDF personnel (32,000 Army; 1,000 Air Force) (2023)
Military equipment inventories and acquisitions the RDF's inventory includes mostly Soviet-era and older Western--largely French and South African--equipment; in recent years, Russia has been the top supplier of arms to Rwanda (2023)
Military service age and obligation 18 years of age for men and women for voluntary military service; no conscription; Rwandan citizenship is required; enlistment is either as contract (5-years, renewable twice) or career (2023). note: as of 2022, women comprised approximately 6% of the Rwanda Defense Force
Military deployments approximately 2,200 Central African Republic (MINUSCA; plus about 700 police); approximately 2,500 Mozambique (deployed mid-2021 under a bilateral agreement to assist with combating an insurgency; includes both military and police forces); 2,600 (plus about 450 police) South Sudan (UNMISS) (2024). note: in December 2020, Rwanda sent an additional 1,200 to the Central African Republic under a bilateral agreement to support and train Central African Republic military forces, but their status as of 2024 was unclear)
Military expenditures
Military Expenditures 2022 1.4% of GDP (2022 est.)
Military Expenditures 2021 1.4% of GDP (2021 est.)
Military Expenditures 2020 1.3% of GDP (2020 est.)
Military Expenditures 2019 1.2% of GDP (2019 est.)
Military Expenditures 2018 1.2% of GDP (2018 est.)
All Important Facts about Rwanda

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Rwanda is found in Eastern Africa