Related Rule
Algeria
Practice Relating to Rule 125. Correspondence of Persons Deprived of Their Liberty
It is reported that, during the Algerian war of independence, “French prisoners never had any reason to complain about their stay in captivity … They had the right to write to their families via the Algerian Red Crescent.” 
La révolution algérienne tient au respect de l’homme, El Moudjahid, Vol. 3, p. 57.