[113] See above, § [59]. See also Rougier, Les guerres civiles, &c. (1903), pp. 372-447, and Westlake, I. pp. 50-57. The Institute of International Law, at its meeting at Neuchatel in 1900, adopted a body of nine articles concerning the rights and duties of foreign States in case of an insurrection; articles 4-9 deal with the recognition of the belligerency of insurgents. See Annuaire, XVIII. p. 227.
Principal and accessory Belligerent Parties.
§ 77. War occurs usually between two States, one belligerent party being on each side. But there are cases in which there are on one or on both sides several parties, and in some of such cases principal and accessory belligerent parties are to be distinguished.
Principal belligerent parties are those parties to a war who wage it on the basis of a treaty of alliance, whether such treaty was concluded before or during the war. On the other hand, accessory belligerent parties are such States as provide help and succour only in a limited way to a principal belligerent party at war with another State; for instance, by paying subsidies, sending a certain number of troops or men-of-war to take part in the contention, granting a coaling station to the men-of-war of the principal party, allowing the latter's troops a passage through their territory, and the like. Such accessory party becomes a belligerent through rendering help.
The matter need hardly be mentioned at all were it not for the fact that the question was formerly discussed by publicists whether or not it involved a violation of neutrality on the part of a neutral State in case it fulfilled in time of war a treaty concluded in time of peace, by the terms of which it had to grant a coaling station, the passage of troops through its territory, and the like, to one of the belligerents. This question is identical with the question, to be treated below in § [305], whether a qualified neutrality, in contradistinction to a perfect neutrality, is admissible. Since the answer to this question is in the negative, such State as fulfils a treaty obligation of this kind in time of war may be considered by the other side an accessory belligerent party to the war, and all doubt in the matter ought now to be removed since article 2 of Convention V. of the Second Peace Conference[114] categorically enacts that "belligerents are forbidden to move across the territory of a neutral Power troops or convoys either of munitions of war or of supplies."
[114] See also article 3 of Convention V.
VI THE ARMED FORCES OF THE BELLIGERENTS
Vattel, III. §§ 223-231—Hall, §§ 177-179, 181—Lawrence, §§ 148-150—Westlake, II. pp. 60-63—Manning, pp. 206-210—Phillimore, III. § 94—Twiss, II. § 45—Halleck, I. pp. 555-562—Taylor, §§ 471-476—Moore, VII. § 1109—Wheaton, §§ 356-358—Bluntschli, §§ 569-572—Heffter, §§ 124-124A—Lueder in Holtzendorff, IV. pp. 371-385—Klüber, 267—G. F. Martens, II. § 271—Gareis, § 83—Ullmann, § 175—Liszt, § 40, II.—Bonfils, Nos. 1088-1098—Despagnet, Nos. 520-523—Pradier-Fodéré, VI. Nos. 2721-2732, and VIII. Nos. 3091-3102—Nys, III. pp. 155-202—Rivier, II. pp. 242-259—Calvo, IV. §§ 2044-2065—Fiore, III. Nos. 1303-1316, and Code, Nos. 1455-1475—Martens, II. § 112—Longuet, §§ 26-36—Pillet, pp. 35-59—Kriegsbrauch, pp. 4-8—Perels, § 34—Boeck, Nos. 209-213—Dupuis, Nos. 74-91—Lawrence, War, pp. 195-218—Zorn, pp. 36-73—Bordwell, pp. 228-236—Land Warfare, § 17-38—Meurer, II. §§ 11-20—Spaight, pp. 34-72—Ariga, pp. 74-91—Takahashi, pp. 89-93.
Regular Armies and Navies.
§ 78. The chief part of the armed forces of the belligerents are their regular armies and navies. What kinds of forces constitute a regular army and a regular navy is not for International Law to determine, but a matter of Municipal Law exclusively. Whether or not so-called Militia and Volunteer corps belong to armies rests entirely with the Municipal Law of the belligerents. There are several States whose armies consist of Militia and Volunteer Corps exclusively, no standing army being provided for. The Hague Regulations expressly stipulate in article 1 that in countries where Militia or Volunteer Corps constitute the army or form part of it they are included under the denomination "Army." It is likewise irrelevant to consider the composition of a regular army, whether it is based on conscription or not, whether natives only or foreigners also are enrolled, and the like.