Horses were widely used during the Napoleonic Wars for combat, patrol and reconnaissance, and for logistical support. Vast numbers were used throughout the wars. During the War of the Sixth Coalition, depletion of the French cavalry arm through attrition (mainly suffered during the Russian Campaign) and loss of horse-producing allies to provide remounts contributed significantly to the gradual French defeat and downfall of the French Empire. During the Waterloo Campaign, the "Armee du Nord" had 47,000 horses: 25,000 cavalry, 12,000 for artillery, 10,000 for infantry and supply columns.