Mongol Military Structure and Sustenance

Key Insight

The Mongol military was composed entirely of cavalry, a defining characteristic that distinguished it from other contemporary armies, which largely relied on foot soldiers. Approximately 65000 Mongol horsemen launched the Jurched campaign against an enemy comprising a similar number of horsemen plus 85000 infantry, yet the Mongols maintained superior mobility. Their decimal organization, where units of 10000 functioned as miniature versions of Genghis Khan's central command, allowed for remarkable adaptability and rapid movement across vast territories.

Unlike conventional armies burdened by extensive supply lines, the Mongols operated without a commissary, depending on their large horse herds for milk and meat, supplemented by hunting and looting. Each warrior carried only essential items such as flints, leather canteens for water and milk, files for sharpening arrowheads, lassos, sewing needles, a knife, a hatchet, and a skin bag. Accounts describe warriors traveling ten days without cooking, consuming horse blood, 1 pound of dried milk paste daily from a 10-pound supply, and dried meat or curd, or even softening raw meat under their saddles. This protein-rich diet of meat, milk, and yogurt contributed to their superior health and strength compared to the grain-fed Jurched soldiers, whose diet often led to stunted bones and dental issues.

Mongol armies moved by spreading out over extensive areas, which provided ample pasture for their animals and maximized hunting opportunities for soldiers, rather than moving in slow, concentrated columns. Genghis Khan maintained a central position, flanked by the Army of the Right to the west and the Army of the Left to the east, with smaller units serving as advance and rear guards, the latter also transporting reserve animals. While central camps for officers were precisely structured, common warriors typically dispersed into smaller groups of three to five men to camp in hidden recesses after a single hot meal prepared at dusk, beginning their day with careful reconnaissance at dawn.