Medieval Military Baggage Trains
The composition of the baggage train varied greatly, depending on the time and place and the structure of the army to which it was attached. In [medieval] Iberia, for example, few wagons were used. Instead, each man-at-arms would have a mule carrying four to eight days’ provisions for himself and his servants, and the townsmen would have their own mules in smaller proportion. In England, France, and Germany, large wagon trains were the norm. A provision of one wagon for ten horsemen seems to have been fairly typical. Municipal militia contingents as well as lords had their carts, wagons, or mules. These might be numerous or few, depending on the anticipated duration, range, and purpose of the expedition, as well as the expectations of dearth or plenty in the campaign theater and the wealth of the community from which the force was drawn. One Swiss force of 440 men going to help break a siege marched with only two carts (though they were large, five-horse models): one packed with bacon, dried beef, oatmeal, barley, butter, and salt and the other with cooking gear, dishes, and tools, including scythes and sickles, as it was late June, time for the wheat harvest. A much higher ratio of wagons, around one per twenty or thirty men, was not uncommon, especially when tents had to be carried. The contingent sent by Arras to the French royal host in 1340 had six wagons drawn by nineteen horses for 200 footmen and two mounted constables, for example. Horsemen, especially nobles, required more baggage, both to support their more luxurious lifestyle and because of the need to carry a rolling reserve of bulky fodder and oats for the horses. Hence, considered as a whole, a mixed army, especially one with a large proportion of mounted men, might have as many as one baggage wagon per ten combatants, or even more.
— Soldiers’ Lives Through History, pp. 74-75