Lacking in numbers, Prince Eugene could not seriously disrupt Tallard's march but the French marshal's progress was proving slow. Tallard's force had suffered considerably more than Marlborough's troops on their march – many of his cavalry horses were suffering from glanders and the mountain passes were proving tough for the 2,000 wagonloads of provisions. Local German peasants, angry at French plundering, compounded Tallard's problems, leading Mérode-Westerloo to bemoan – "the enraged peasantry killed several thousand of our men before the army was clear of the Black Forest."