Each corps (typically 20,000–30,000 men) functioned as a "miniature army" with its own infantry, cavalry, artillery, and support services .
These corps could march along separate routes, easing logistics by foraging from different areas, and then rapidly concentrate for battle . Napoleonic Wars: Napoleon’s Army
Napoleon effectively integrated three distinct branches of service to achieve "combined arms" dominance : Napoleon's 'Grande Armée' (1) Each corps (typically 20,000–30,000 men) functioned as a