20 ILCS 1807/98

Misconduct as prisoner. Any person subject to this Code who, while in the hand of the enemy in time of war: (1) for the purpose of securing favorable treatment by his captors acts without proper authority in a manner contrary to law, custom, or regulation, to the detriment of others of whatever nationality held by the enemy as civilian or military prisoners; or (2) while in a position of authority over such persons maltreats them without justifiable cause; shall be punished as a court-martial may direct.