Geneva Convention (IV): Relative to the Protection of Civilian Persons, Part III, Section 4, Chapter III

Daily food rations for internees shall be sufficient in quantity, quality and variety to keep internees in a good state of health and prevent the development of nutritional deficiencies. Account shall also be taken of the customary diet of the internees.

Internees shall also be given the means by which they can prepare for themselves any additional food in their possession.

Sufficient drinking water shall be supplied to internees. The use of tobacco shall be permitted.

Internees who work shall receive additional rations in proportion to the kind of labour which they perform.

Expectant and nursing mothers and children under fifteen years of age shall be given additional food, in proportion to their physiological needs.

When taken into custody, internees shall be given all facilities to provide themselves with the necessary clothing, footwear and change of underwear, and later on, to procure further supplies if required. Should any internees not have sufficient clothing, account being taken of the climate, and be unable to procure any, it shall be provided free of charge to them by the Detaining Power.

The clothing supplied by the Detaining Power to internees and the outward markings placed on their own clothes shall not be ignominious nor expose them to ridicule.

Workers shall receive suitable working outfits, including protective clothing, whenever the nature of their work so requires.