Part VII : Application of the convention to certain categories of civilians - Art. 81.
Art. 81. Persons who follow the armed forces without directly belonging thereto, such as correspondents, newspaper reporters, sutlers, or contractors, who fall into the hands of the enemy, and whom the latter think fit to detain, shall be entitled to be treated as prisoners of war, provided they are in possession of an authorization from the military authorities of the armed forces which they were following.