A pendant to the levy of troops on neutral territory was the granting of Letters of Marque to vessels belonging to the merchant marine of neutrals. Since privateering has practically disappeared, the question as to whether neutrals must prohibit their subjects from accepting Letters of Marque from a belligerent,[628] need not be discussed.
[628] See above, § [83]. With the assertion of many writers that a subject of a neutral who accepts Letters of Marque from a belligerent may be treated as a pirate, I cannot agree. See above, [vol. I. § 273].
Passage of Bodies of Men intending to Enlist.
§ 331. A neutral is not obliged by his duty of impartiality to interdict passage through his territory to men either singly or in numbers who intend to enlist. Thus in 1870 Switzerland did not object to Frenchmen travelling through Geneva for the purpose of reaching French corps or to Germans travelling through Basle for the purpose of reaching German corps, under the condition, however, that these men travelled without arms and uniform. On the other hand, when France during the Franco-German War organised an office[629] in Basle for the purpose of sending bodies of Alsatian volunteers through Switzerland to the South of France, Switzerland correctly prohibited this on account of the fact that this official organisation of the passage of whole bodies of volunteers through her neutral territory was more or less equal to a passage of troops.
[629] See Bluntschli, § 770.
The Second Peace Conference has sanctioned this distinction, for article 6 of Convention V. enacts that "the responsibility of a neutral Power is not involved by the mere fact that persons cross the frontier individually (isolément) in order to offer their services to one of the belligerents." An argumentum e contrario justifies the conclusion that the responsibility of a neutral is involved in case it does allow men to cross the frontier in a body in order to enlist in the forces of a belligerent.
Organisation of Hostile Expeditions.
§ 332. If the levy and passage of troops, and the forming of corps of combatants, must be prevented by a neutral, he is all the more required to prevent the organisation of a hostile expedition from his territory against either belligerent. Such organisation takes place when a band of men combine under a commander for the purpose of starting from the neutral territory and joining the belligerent forces. The case, however, is different, if a number of individuals, not organised into a body under a commander, start in company from a neutral State for the purpose of enlisting with one of the belligerents. Thus in 1870, during the Franco-German War, 1200 Frenchmen started from New York in two French steamers for the purpose of joining the French Army. Although the vessels carried also 96,000 rifles and 11,000,000 cartridges, the United States did not interfere, since the men were not organised in a body, and since, on the other hand, the arms and ammunition were carried in the way of ordinary commerce.[630]
[630] See Hall, § 222.
Use of Neutral Territory as Base of Naval Operations.