Art. 2. Direct repatriation, man for man and rank for rank, for sub-officers, Corporals, and soldiers in captivity for at least eighteen months, and not included in any of the classes mentioned in Article 1. Art. 3. In the exchange provided for in Article 2 no distinction will be made between sub-officers. Corporals will be ranked with them. Art. 4. Internment in Switzerland, without regard for rank or numbers, for all officers in captivity at least eighteen months: (a) who have reached the age of 40 years and are not yet 45, and are the fathers of at least three living children; (b) who have reached the age of 45 years, but are not yet 48. Art. 5. Internment in Switzerland, man for man, regardless of rank, for sub-officers in captivity at least eighteen months and not included in the foregoing categories. Art. 6. The order of priority for repatriation and internment shall be determined by priority of captivity and by equal duration of imprisonment after considering age. If this order cannot be followed exactly, the repatriation of the prisoner who has to remain shall not be delayed beyond two months at most. Art. 9. Repatriation, without regard to rank or numbers, for officers, sub-officers, Corporals, and soldiers who were taken prisoner prior to Nov. 1, 1916, and who on April 15, 1918, find themselves interned in Switzerland by reason of wounds or illness. TRANSPORTING PRISONERS Art. 10. The repatriation of these prisoners shall be effected in the following manner: Each train in either direction shall contain 700 prisoners of war to be exchanged, man for man. Each train coming from Germany, moreover, shall contain 100 French prisoners of war designated in Article 1, and each train from France shall contain 50 German prisoners of the same category, until the total in this class on both sides is exhausted. The repatriation shipments should contain a monthly average of 15 per cent. of noncommissioned officers and 85 per cent. of privates. Art. 11. At the beginning of each series of ten trains of private soldiers there shall be formed on each side a convoy of 400 officers to be interned in Switzerland in accordance with Article 5. This convoy shall include, besides, 100 French officers coming from Germany and 50 German officers coming from France to be interned under Article 4, until the total on each side is exhausted. Art. 12. The first two trainloads of officers provided for in Article 11 shall start from Lyons, the third from Constance, the fourth from Lyons, and so on alternately. The first ten trains of private soldiers arranged for under Article 10 shall start from Constance; the ten trains of the second series shall go from Lyons, and so on alternately.