A line of demarcation between regular and irregular combatants was drawn up in 1907 by Articles 1, 2 and 3 of the Hague Regulations, provisions of which have been supplemented by Article 4 of Geneva Convention III of 1949, Articles 13 and 14 of Geneva Convention I of 1949, and Articles 12 and 16 of Geneva Convention II of 1949. Together, these provisions constituted the law on this subject.