It took 21 days for France to mobilize 300,000 soldiers, while Prussia mobilized 470,000 in just eight days.
Primarily composed of seasoned regulars, including the elite Imperial Guard and the Armée d’Afrique . Weaknesses:
The total surrender at the Battle of Sedan (September 1870) saw the capture of Napoleon III and nearly 100,000 troops, effectively destroying the professional field army. 2. The Army of the Third Republic (Republican Phase)
Generals often relied on outdated tactics from colonial "guerrilla" wars in Algeria and Mexico, failing to adapt to modern strategic warfare.