Related Rule
Croatia
Practice Relating to Rule 65. Perfidy
Section C. Simulation of being disabled by injuries or sickness
Croatia’s Commanders’ Manual (1992) states: “It is prohibited to feign a protected status by inviting the confidence of the enemy: … feigning … of incapacitation by wounds or sickness.” 
Croatia, Basic Rules of the Law of Armed Conflicts – Commanders’ Manual, Republic of Croatia, Ministry of Defence, 1992, § 46.