Related Rule
Practice Relating to Rule 63. Use of Flags or Military Emblems, Insignia or Uniforms of Neutral or Other States Not Party to the Conflict
Nicaragua’s Military Penal Code (1996) punishes any soldier who, in time of war and in an area of military operations, “unlawfully displays … the flags or emblems … of neutral [States]”. 
Nicaragua, Military Penal Code, 1996, Article 50(1).