Related Rule
Greece
Practice Relating to Rule 29. Medical Transports
The Hellenic Territorial Army’s Internal Service Code (1984), as amended, provides: “Members of the armed forces should: … Respect … the means of transport of medical services.” 
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:
[T]he protection of any type of hospital vessels and boats is conventionally consolidated. The same protection is extended to medical aircrafts (art. 36 of the Ist Geneva Convention and art. 24, 25, 27–30 of Ist Add. Protocol) and according to practice followed during the Falklands war also to helicopters used for carrying the wounded, shipwrecked and the dead. 
Greece, International Law Manual, Hellenic Navy General Staff, Directorate A2, Division IV, 1995, Chapter 7, Part I, § 7.
Greece’s Military Penal Code (1995) provides for the protection of medical aircraft. 
Greece, Military Penal Code, 1995, Article 156.
The Hellenic Navy’s International Law Manual (1995) provides:
The need to protect non-combatants during naval warfare, as in any other kind of warfare, is indispensable. This is why art. 22 of the Ist Add. Protocol to the Geneva Conventions extend the protection afforded by the provisions of the IInd Geneva Convention to hospital vessels and lifeboats of any type, their personnel and generally to all non-combatants who are wounded, sick or shipwrecked even when they are aboard any kind of vessel. As a consequence, these persons should not be captured by the enemy and in cases where they are found in enemy hands, there is an obligation to be assisted and protected, according to the relevant conventional provisions. 
Greece, International Law Manual, Hellenic Navy General Staff, Directorate A2, Division IV, 1995, Chapter 7, Part I, § 5.