The Corps Commander: General de Corps d'Armee AggofanCZ
The French Army under Napoleon used corps-sized formations (French: Corps d'Armée) as the first formal combined-arms groupings of divisions with reasonably stable manning and equipment establishments. Napoleon first used the Corps d'armée in 1805 . The use of the Corps d'armée was a military innovation that provided Napoleon with a significant battlefield advantage in the early phases of the Napoleonic Wars. The Corps was designed to be an independent military group containing cavalry, artillery and infantry, and capable of defending against a numerically superior foe.
The corps was composed of all arms of the service, was self-sustaining, and could fight on its own until other corps could join in the battle. The corps itself was a headquarters to which units could be attached. It might have attached two to four divisions of infantry with their organic artillery, it had its own cavalry division and corps artillery, plus support units. With this organization a corps was expected to be able to hold its ground against, or fight off an enemy army for a least a day, when neighboring corps could come to its aid. "Well handled, it can fight or alternatively avoid action, and maneuver according to circumstances without any harm coming to it, because an opponent cannot force it to accept an engagement but if it chooses to do so it can fight alone for a long time.