Malplaquet (War of the Spanish Succession).
Fought September 11, 1709, between the British and Imperialists, under Marlborough and Prince Eugene, and the French, under Marshal Villars. Villars offered battle with the object of relieving Mons, which the allies were besieging, but while they were waiting for reinforcement from Tournay, he was enabled to entrench himself strongly on the ground he had chosen. After desperate fighting, however, the French position was carried from end to end, and they were driven out with a loss of 17,000 killed and wounded. The allies lost, according to most accounts, about 8,000, though some contemporaries assert that their losses were even heavier than those of the French.