Encyclopaedia Britannica, 11th Edition, "Gassendi, Pierre" to "Geocentric" Volume 11, Slice 5
v. The military hospital-ships shall be distinguished by being painted
white outside with a horizontal band of green about a metre and a half in breadth.
The ships mentioned in Articles ii. and iii. shall be distinguished by being painted white outside with a horizontal band of red about a metre and a half in breadth.
The boats of the ships above mentioned, as also small craft which may be used for hospital work, shall be distinguished by similar painting.
All hospital-ships shall make themselves known by hoisting, together with their national flag, the white flag with a red cross provided by the Geneva Convention, _and, in addition, if they belong to a neutral State, by hoisting on the mainmast the national flag of the belligerent under whose direction they are placed._
_Hospital-ships which, under the terms of Article iv., are detained by the enemy, must lower the national flag of the belligerent under whom they were acting._
_The above-mentioned vessels and boats, desiring at night-time to ensure the respect due to them, shall, with the consent of the belligerent whom they are accompanying, take the necessary steps that the special painting denoting them shall be sufficiently conspicuous._
vi. [Neutral merchantmen, yachts or vessels, having, or taking on board, sick, wounded or shipwrecked of the belligerents, cannot be captured for so doing, but they are liable to capture for any violation of neutrality they may have committed.]
_The distinctive signs provided by Article v. can only be used, whether in time of peace or in time of war, to protect ships therein mentioned._
vii. _In the case of a fight on board a war-ship, the hospitals shall be respected and shall receive as much consideration as possible._
_These hospitals and their belongings are subject to the laws of war, but shall not be employed for any other purpose so long as they shall be necessary for the sick and wounded._
_Nevertheless, the commander who has them under his orders, may make use of them in case of important military necessity, but he shall first ensure the safety of the sick and wounded on board._
viii. _The protection due to hospital-ships and to hospitals on board war-ships shall cease if they are used against the enemy._
_The fact that the crew of hospital-ships, and attached to hospitals on war-ships, are armed for the maintenance of order and for the defence of the sick or wounded, and the existence of a radio-telegraphic installation on board, is not considered as a justification for withdrawing the above-mentioned protection._
ix. _Belligerents may appeal to the charitable zeal of commanders of neutral merchant vessels, yachts or other craft, to take on board and look after the sick and wounded._
_Ships having responded to this appeal, as well as those who have spontaneously taken on board sick, wounded or shipwrecked men, shall have the advantage of a special protection and of certain immunities. In no case shall they be liable to capture on account of such transport; but subject to any promise made to them they are liable to capture for any violation of neutrality they may have committed._
[vii.] x. The religious, medical or hospital staff of any captured ship is inviolable, and its members cannot be made prisoners of war. On leaving the ship they take with them the objects and surgical instruments which are their own private property.
This staff shall continue to discharge its duties while necessary, and can afterwards leave when the commander-in-chief considers it possible.
The belligerents must guarantee to the staff that has fallen into their hands [the enjoyment of their salaries intact] _the same allowances and pay as those of persons of the same rank in their own navy_.
[viii.] xi. Sailors and soldiers, _and other persons officially attached to navies or armies_, who are taken on board when sick or wounded, to whatever nation they belong, shall be [protected] respected and looked after by the captors.
xii. _Every vessel of war of a belligerent party may claim the return of the wounded, sick or shipwrecked who are on board military hospital-ships, hospital-ships of aid societies or of private individuals, merchant ships, yachts or other craft, whatever be the nationality of these vessels._
xiii. _If the wounded, sick or shipwrecked are received on board a neutral ship of war, it shall be provided, as far as possible, that they may take no further part in war operations._