The First Battle of Guinegate took place on August 7, 1479. French troops of King Louis XI were defeated by the Burgundians led by Archduke Maximilian of Habsburg. This battle was the first in which the innovative Swiss pike square formation was first employed by a power that was not natively Swiss.
Charles the Bold, the last Duke of Burgundy had been killed at the Battle of Nancy on January 5, 1477. King Louis XI immediately adjudicated his territories to be recovered fiefs of the French kingdom and campaigned in the counties of Artois, Flanders, Hainaut and the Duchy of Burgundy. Nevertheless, Charles' only heir, Mary of Burgundy on August 19, 1477 had married Archduke Maximilian, who, determined to come into the Burgundian inheritance, concentrated troops in the former Burgundian Netherlands and marched against the French army.
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