4. To reserve to the public authorities power so to control the selection of soldiers as to prevent the absorption of men indispensable to agriculture and industry, and to prevent the loss of national strength involved by the acceptance into military service of men whose greatest usefulness is in scientific pursuits or in production.
5. To select, so far as may be, those men for military service whose families and domestic obligations could best bear their separation from home and dependents, and thus to cause the least possible distress among the families of the Nation which are dependent upon the daily earnings of husbands and fathers for their support.
These considerations, shortly stated, amount to a policy which, recognizing the life of the nation as a whole, and assuming both the obligation and the willingness of the citizen to give the maximum of service, institutes a national process for the expression of our military, industrial, and financial strength, all at their highest, and with the least waste, loss, and distress.
Regular Army and National Guard increased.
The act of Congress authorizing the President to increase temporarily the Military Establishment of the United States, approved May 18, 1917, provided for the raising and maintaining by selective draft of increments (in addition to the Regular Army and National Guard) of 500,000 men each, together with recruit training units for the maintenance of such increments at the maximum strength, and the raising, organizing, and maintaining of additional auxiliary forces, and also for raising and maintaining at their maximum strength, by selective draft when necessary, the Regular Army and the National Guard drafted into the service of the United States.
Male citizens between 21 and 30 years liable to military service.
It also provided that such draft "shall be based upon liability to military service of all male citizens, or male persons not alien enemies, who have declared their intention to become citizens, between the ages of 21 and 30 years, both inclusive"; that the several States, Territories, and the District of Columbia should furnish their proportionate shares or quotas of the citizen soldiery determined in proportion to the population thereof, with certain credits allowed for volunteer enlistments in branches of the service then organized and existing.
The Nation was confronted with the task of constructing, without delay, an organization by which the selection might be made for the entire country by means of a uniform and regulated system.
The Provost Marshal General begins registration.
A suggestion of administration, incomplete because of entirely different conditions, arose from the precedent of the Civil War draft; and on May 22, 1917, the Judge Advocate General was detailed as "Provost Marshal General" and charged with the execution, under the Secretary of War, of so much of the act of May 18 "as relates to the registration and the selective draft." Plans had already been formulated for the operation of the selective draft, and with the formal designation of the Provost Marshal General the work of organization began.