Related Rule
Greece
Practice Relating to Rule 3. Definition of Combatants
The Hellenic Territorial Army’s Internal Service Code (1984), as amended, provides:
Members of the armed forces should:
(a) Consider as “lawful combatants” those who belong to the armed forces of the enemy or to the national guard (the organized resistance included), provided that the personnel of the above is organized in units, is under the command of a certain leader, has a distinctive sign, carries arms openly and respects the laws and customs of war. Persons who do not fulfil the above conditions should not be considered as “lawful combatants”. 
Greece, Hellenic Territorial Army Regulation of Internal Service Code, Presidential Decree 130/1984 (Military Regulation 20-1), as amended, Article 14(a).