In Republic of the Congo, the FAC's primary focus is internal security; it is organized into approximately nine military zones; the Army's  primary combat forces are an infantry brigade and a Republican Guard force

since its creation in 1961, the FAC has had a turbulent history; it has been sidelined by some national leaders in favor of personal militias, endured an internal rebellion (1996), and clashed with various rebel groups and political or ethnic militias (1993-1996, 2002-2005, 2017); during the 1997-1999 civil war, the military generally split along ethnic lines, with most northern officers supporting eventual winner SASSOU-Nguesso, and most southerners backing the rebels; others joined ethnic-based factions loyal to regional warlords; forces backing SASSOU-Nguesso were supported by Angolan troops and received some French assistance; the FAC also has undergone at least three reorganizations that included the incorporation of former rebel combatants and various ethnic and political militias; in recent years, France has provided some advice and training, and a military cooperation agreement was signed with Russia in 2019 (2024)