Camisado

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Camisado, or camisade, is a surprise attack at night or at daybreak when the enemy is believed to be asleep. The name comes from the Spanish word camisa, meaning shirt, because attackers wore a white shirt to move in quietly. Historically, Spanish infantry (the Tercio) would send a small force—often about fifty men—with minimal gear (swords and daggers, sometimes arquebuses or muskets) to strike swiftly and silently as the enemy slept, aiming to kill as many as possible before they could react.