Whether it was the hot, late summer, or the strange food, or the strong red wines, there was a steadily lengthening sick-list and since invalids left behind were likely to be knocked on the head by the justifiably irritated peasantry the long unsoldierly trains of wagons, loaded with plunder, were further burdened with men unfit to march.

Garrett Mattingly, The Defeat of the Spanish A…, loc. 377