Related Rule
South Africa
Practice Relating to Rule 62. Improper Use of Flags or Military Emblems, Insignia or Uniforms of the Adversary
South Africa’s LOAC Manual (1996) provides:
It is prohibited to use the insignia or uniforms of the enemy while engaging in attacks or in order to shield, favour, protect or impede military operations … All insignia on enemy equipment must be removed before the equipment may be utilised by own forces. 
South Africa, Presentation on the South African Approach to International Humanitarian Law, Appendix A, Chapter 4: International Humanitarian Law (The Law of Armed Conflict), National Defence Force, 1996, § 34(b).
South Africa’s Revised Civic Education Manual (2004) states:
Use of Enemy Uniforms and Equipment. It is prohibited to use the insignia or uniforms of the enemy while engaging in attacks or in order to shield, favour, protect or impede military operations. If captured out of uniform, soldiers are at risk of being treated as spies or unlawful combatants. All insignia on enemy equipment must be removed before the equipment may be utilised by own forces. 
South Africa, Revised Civic Education Manual, South African National Defence Force, 2004, Chapter 4, § 56(b).
South Africa’s ICC Act (2002) reproduces the war crimes listed in the 1998 ICC Statute, including in international armed conflicts: “making improper use of … the flag or of the military insignia and uniform of the enemy … resulting in death or serious personal injury”. 
South Africa, ICC Act, 2002, Schedule 1, Part 3, § (b)(vii).