Perfidy in war in which one side promises to act in good faith ( e.g. by raising a flag of surrender ) with the intention of breaking that promise once the enemy has exposed himself .
Perfidy in war is a criminal form of deception .
Perfidy in war , a criminal form of deception , in which one side promises to act in good faith ( e.g. by raising a flag of surrender ) with the intention of breaking that promise once the enemy has exposed himself .