Соответствующая норма
Practice Relating to Rule 37. Open Towns and Non-Defended Localities
Zimbabwe’s Geneva Conventions Act (1981), as amended in 1996, punishes “any person, whatever his nationality, who, whether in or outside Zimbabwe, commits any such grave breach of … [the 1977 Additional Protocol I]”. 
Zimbabwe, Geneva Conventions Act, 1981, as amended in 1996, Section 3(1).
According to the Report on the Practice of Zimbabwe, non-defended areas are not to be attacked, but they may be occupied. 
Report on the Practice of Zimbabwe, 1998, Chapter 1.8.