In Burundi, the FDNB is responsible for defending Burundi’s territorial integrity and protecting its sovereignty; it has an internal security role, including maintaining and restoring public order if required; the FDNB also participates in providing humanitarian/disaster assistance, countering terrorism, narcotics trafficking, piracy, and illegal arms trade, and protecting the country’s environment; the FDNB conducts limited training with foreign partners such as Russia and participates in regional peacekeeping missions, most recently in the Central African Republic, the Democratic Republic of the Congo (DRC), and Somalia; these missions have provided the force some operational experience and funding; in recent years the FDNB has conducted operations against anti-government rebel groups based in the neighboring DRC that have carried out sporadic attacks in Burundi, such as the such as National Forces of Liberation (FNL), the Resistance for the Rule of Law-Tabara (aka RED Tabara), and Popular Forces of Burundi (FPB or FOREBU)

the Arusha Accords that ended the 1993-2005 civil war created a unified military by balancing the predominantly Tutsi ex-Burundi Armed Forces (ex-FAB) and the largely Hutu dominated armed movements and requiring the military to have a 50/50 ethnic mix of Tutsis and Hutus (2024)