Related Rule
Guatemala
Practice Relating to Rule 64. Conclusion of an Agreement to Suspend Combat with the Intention of Attacking by Surprise the Adversary Relying on It
Guatemala’s Penal Code (1973) punishes “anyone who violates a truce or armistice concluded between Guatemala and a foreign power or between their belligerent forces”. 
Guatemala, Penal Code, 1973, Article 373.