Geneva Conventions and the Additional Protocols.
The first Geneva Convention of 1864 concerned exclusively the nursing of the wounded soldiers. Later, law was formed in order to include the hostilities at sea and the prisoners of war.
In 1949, the Conventions were adapted and extended:
1st Convention
Wounded soldiers in the battlefield
2nd Convention
Wounded and shipwrecked members of armed forces in sea
3rd Convention
Prisoners of war
4th Convention
Civilians under enemy occupation
In 1977, two Additional Protocols were adopted:
1st Protocol
International conflicts
2nd Protocol
Non-international conflicts
In 2005, the Additional Protocol 3 was adopted:
3rd Protocol
Additional distinctive emblem
For further information about the international documents of Humanitarian Law, press here