British Command devoted to the sick, malarial cases were extremely numerous. In the summer of 1916 there were 11,500 beds in the British hospitals at Salonica, and some 30,000 malarial cases admitted. These figures increased during the succeeding summers, because, in addition to the new cases, there were the relapses of the preceding years. Thus in 1917 malarial cases rose to 63,000, and in 1918, when the total strength was much reduced, to 67,000. Early in 1918 the so-called “Y” system was introduced, whereby chronic malarial cases were sent home. To reach the British front there were two main arteries--the Janesh road and the Serres road. Both had existed before the war, but were then in such an appalling state of neglect as to be in places almost impassable, and full of holes throughout their entire length; they were indeed little better than tracks, save for a few kilometres here and there. The British military authorities had had practically to rebuild them, and they made them into really magnificent thoroughfares. Their construction and maintenance required armies of native labourers and cost vast sums. But the expenditure was in a sense an economy, because it spared the wear and tear of the lorries, the renewal of which would not only have cost far more if the roads had been neglected, but they would have been difficult to replace owing to the scarcity of tonnage and submarine risks. These roads and the others built by the French and the Italians, were a magnificent legacy left to Greece and Serbia, but a few weeks of Balkan régime, after the greater Allies had handed them over, sufficed to reduce them to their original state of hopeless dilapidation and ruin once more.