§ 81. It sometimes happens during war that on the approach of the enemy a belligerent calls the whole population of the country to arms and thus makes them a part, although a more or less irregular part, of his armed forces. Provided they receive some organisation and comply with the laws and usages of war, the combatants who take part in such a levy _en masse_ organised by the State enjoy the privileges due to members of armed forces. It sometimes happens, further, during wars, that a levy _en masse_ takes place spontaneously without organisation by a belligerent, and the question arises whether or not those who take part in such levies _en masse_ belong to the armed forces of the belligerents, and therefore enjoy the privileges due to members of such forces. Article 2 of the Hague Regulations stipulates that the population of a territory not yet occupied who, on the enemy's approach, spontaneously take up arms to resist the invading enemy, without having time to organise themselves under responsible commanders and to procure fixed distinctive emblems recognisable at a distance, shall nevertheless enjoy the privileges due to armed forces, provided that they carry arms openly and act otherwise in conformity with the laws and usages of war. But this case is totally different from a levy _en masse_ of the population of a territory already invaded by the enemy, for the purpose of freeing the country from the invader. The stipulation of the Hague Regulations quoted above does not cover this case, in which, therefore, the old customary rule of International Law is valid, that those taking part in such a levy _en masse_, if captured, are liable to be shot.[121] [Footnote 121: See below, § 254. Article 85 of the American _Instructions for the Government of Armies in the Field_ of 1863 has enacted this rule as follows: "War rebels are persons within an occupied territory who rise in arms against the occupying or conquering army, or against the authorities established by the same. If captured, they may suffer death, whether they rise singly, in small or large bands, and whether called upon to do so by their own, but expelled Government or not...."]