Related Rule
Costa Rica
Practice Relating to Rule 65. Perfidy
Section F. Simulation of protected status by using the distinctive emblems of the Geneva Conventions
Costa Rica’s Emblem Law (2000) punishes:
any person who, inviting the good faith of the adversary with intent to make him believe that he is entitled to protection of his physical integrity or his life or that he is obliged to accord protection in conformity with International Humanitarian Law, uses, or orders to be used, perfidiously the protective emblem. 
Costa Rica, Emblem Law, 2000, Article 8.