Related Rule
South Africa
Practice Relating to Rule 36. Demilitarized Zones
South Africa’s LOAC Manual (1996) qualifies attacks against demilitarized zones as grave breaches of the 1977 Additional Protocol I. 
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, § 41.
South Africa’s Revised Civic Education Manual (2004) provides that “[a]ny attack on [a] demilitarised zone” is a grave breach of the law of armed conflict and a war crime. 
South Africa, Revised Civic Education Manual, South African National Defence Force, 2004, Chapter 4, § 57.