air

... Prisoners of war shall have shelters against air bombardment and other hazards of war, to the same extent as the local civilian population. With the exception of those engaged in the protection of their quarters against the aforesaid hazards, they may enter such shelters as soon as possible after the giving of the alarm. Any other protective measure taken in favour of the population shall also apply to them. ...

... Whenever military considerations permit, prisoner of war camps shall be indicated in the day-time by the letters PW or PG, placed so as to be clearly visible from the air. The Powers concerned may, however, agree upon any other system of marking. Only prisoner of war camps shall be marked as such. ...

... The Detaining Power shall supply prisoners of war during transfer with sufficient food and drinking water to keep them in good health, likewise with the necessary clothing, shelter and medical attention. The Detaining Power shall take adequate precautions especially in case of transport by sea or by air, to ensure their safety during transfer, and shall draw up a complete list of all transferred prisoners before their departure. ...

... Prisoners of war awarded disciplinary punishment shall be allowed to exercise and to stay in the open air at least two hours daily. ...

... In any case, prisoners of war sentenced to a penalty depriving them of their liberty shall retain the benefit of the provisions of Articles 78 and 126 of the present Convention. Furthermore, they shall be entitled to receive and despatch correspondence, to receive at least one relief parcel monthly, to take regular exercise in the open air, to have the medical care required by their state of health, and the spiritual assistance they may desire. Penalties to which they may be subjected shall be in accordance with the provisions of Article 87, third paragraph. ...