Related Rule
Greece
Practice Relating to Rule 38. Attacks against Cultural Property
The Hellenic Territorial Army’s Internal Service Code (1984), as amended, provides:
[Members of the armed forces] are obliged not to destroy historical monuments as well as buildings destined for religious worship, arts, sciences and charity, provided they are not used for military purposes. 
Greece, Hellenic Territorial Army Regulation of Internal Service Code, Presidential Decree 130/1984 (Military Regulation 20-1), as amended, Article 14(d).
The Hellenic Navy’s International Law Manual (1995) provides:
1. … [T]he provisions of the otherwise obsolete IX Hague Convention concerning the respect and protection of the victims of armed conflict should be considered as bearing a perpetual binding effect.
2. To the above effect, the significance of the codified text of IX Hague Convention is great and the following provisions should be applied by the belligerents:
b. In bombardments by naval forces, all the necessary measures must be taken by the commander to spare, as far as possible, sacred edifices, buildings used for artistic, scientific or charitable purposes, [and] historic monuments …(art.5). 
Greece, International Law Manual, Hellenic Navy General Staff, Directorate A2, Division IV, 1995, Chapter 7, Part II, §§ 1–2.