There were several Geneva Conventions prior to the 1949 one; the "Convention relative to the Treatment of Prisoners of War" was signed in 1929. https://ihl-dat

There were several Geneva Conventions prior to the 1949 one; the "Convention relative to the Treatment of Prisoners of War" was signed in 1929. https://ihl-databases.icrc.org/en/ihl-treaties/gc-pow-1929 https://ihl-databases.icrc.org/en/ihl-treaties/gc-pow-1929