As already stated in a previous chapter, in the first stages of the negotiations of 1915 for the internment of Ps. of W. attention had been directed solely to the hospitalization in Switzerland of one category of prisoners, viz., that of the tuberculous; but very shortly, under the pressure of public opinion, further attention had been drawn to the advisability of extending the principle to other categories, with a view to the inclusion of disabilities of a very varying nature. The discussions were continued during 1915, with a view to the realization of an enlarged programme, and in January, 1916, a first list, comprising twelve categories of disabilities or wounds, had been prepared and agreed upon, including that of tuberculosis, and the first essays of internment were made on the 26th of January, 1916, commencing with 200 tuberculous cases. By the 14th of February 1,247 French and German Ps. of W. had been interned in the regions of Montana, Montreux, Leysin, the Bernese Oberland, the Quatre Cantons, and Davos, comprised of men of the aforesaid categories. By the 16th of February the list had been increased to twenty categories, to be afterwards reduced in June and July, 1916, to eighteen. These lists formed the basis of the work done by the so-called "Itinerant Commissions of Swiss Medical officers," who were authorized to proceed to Germany, France, and England for the examination and selection for internment in Switzerland of all those prisoners found to be suffering from the diseases or wounds mentioned in the aforesaid eighteen categories. The "Médecin d'Armée" was thus suddenly faced with the problem of the internment and treatment of a number of Ps. of W. largely in excess of those originally in view, and the whole of his programme had to be re-cast to meet the needs of a body of Interned, not less than the strength of an Army Corps. The serious nature of the demands made on the medical organization of the country may be realized from the fact that every one of the 30,000 men about to reach Switzerland was suffering from one or other form of disability, requiring medical attention at the hands of a Sanitary Service manned and equipped for the ordinary requirements of the small Swiss Army. To meet the additional requirements of the medical personnel, medical officers in civil employ, liable for further service, were mobilized, and many civilian doctors, not so liable, were called upon for a term of duty. As regards the housing of those prisoners whose treatment was not of a pressing nature, and who formed the majority of the Interned, accommodation was found in the hotels and châlets with which Switzerland is so richly endowed. In this respect no difficulty was experienced; but for those requiring that care and treatment which could only be given in a hospital, the solution was not so easy, as the necessary accommodation for the large numbers of sick, with which the country was being flooded, was lacking.