Pike square

The pike square was used to devastating effect at the Battle of Nancy against Charles the Bold of Burgundy in 1477, when the Swiss defeated a smaller but more powerful armored cavalry force.

The battle is generally seen as one of the turning points that established the infantry as the primary fighting arm in European warfare from the 16th century onwards.

The Burgundian compagnie d'ordonnance was a formidable combined arms force relying on close cooperation between heavily armored knights, dismounted men-at-arms, a variety of ranged troops including archers and crossbowmen, and an early form of field artillery.

It was one of the most feared and most effective ground forces in 15th-century Europe, fresh from its victory over the French in the dynastic conflicts that followed the end of the Hundred Years' War.

In response to the Burgundian threat, the Swiss developed a tactic that could be used by mobile, lightly armored soldiers carrying only a long, steel-tipped pike for defence.

With their famed discipline and in combination with heavy cavalry like the gendarme, the Swiss pike squares were almost invincible on the late medieval battlefield.