The United States entered the war resolved to win supremacy in the air. Congress adopted an appropriation of $640,000,000, in addition to $15,000,000 already granted, to provide the best airplane service possible. The best motor engineers in the country combined their talents to provide a motor, and the result of their efforts was the Liberty motor, asserted to be superior to anything used by any army air corps. Delivery of the new motors in quantity has been delayed by various causes. But the initial difficulties have been solved and quantity production of battle planes, as well as of training planes, is expected during the Summer of 1918. While there are more than seventy different types of airplane motors on the western allied front, the United States is relying on a single standardized type, greatly reducing the ratio of forty-seven men required on the ground by foreign service for every man in the air. Colossal work has been done by the Quartermaster Corps, which supplies almost everything that a soldier needs, except ammunition; which transports those supplies as well as the soldier, feeds him, clothes him, and provides him with shelter. The war found the Quartermaster General's office without funds, Congress having adjourned without voting the Army Appropriation bill. But it tided over the interval until money was forthcoming. It has since spent $2,789,684,778, has clothed the draft armies and fed them, supplied the oversea forces with the million things they need, and there are at present few complaints of its work. The details are seen in columns of figures all running into millions. In this first year the Quartermaster Corps has spent $60,000,000 for horse-drawn vehicles and harness, more than $50,000,000 for horses, mules, and harness, and now estimates it will need for fuel and forage alone more than half a billion dollars. ARMY MEDICAL CORPS In preparation for large numbers of wounded and invalided men, the Medical Corps of the army has enlisted doctors and nurses by the thousand. In addition to the work being done for the Red Cross, which is a separate institution, the Army Medical Corps has enlarged its personnel from 8,000 to 106,000, including orderlies, stretcher bearers, and ambulance drivers. Its 900 doctors before the war are now increased to 18,000. It had 375 army nurses a year ago; now it has 7,000. It had no ambulance service; now it has 6,000 drivers in training. Reconstruction institutions are being provided in the United States on a more comprehensive scale than any other nation at war has attempted. Already a few wounded soldiers are being reconstructed at Medical Corps hospitals so as to be able to support themselves now that they are blind or crippled. Professional men, nurses, and attendants from our most noted civil reconstruction hospitals have been added to the personnel of the Medical Corps for this work.