The termination of captivity for reasons of health is one of the rights of prisoners of war stipulated by the Geneva Conventions.
Article 109 of the Third Convention lays down that Parties to the conflict are bound to send back to their own country, regardless of number or rank, seriously wounded and seriously sick prisoners of war.
The same article stipulates that the belligerent Parties shall endeavour to make arrangements for the “accommodation in neutral countries”, as a subsidiary solution, of all cases where captivity should be terminated for humanitarian reasons, but where, for military motives, the States concerned are unable to agree to repatriation. We are here above all thinking of aged prisoners, of those who have undergone a long period of captivity or of those whose mental health has deteriorated.