THE object of this work is to equalize the examinations of officers by boards and to relieve the War Department of the trouble of preparing sample questions, each subject being exhausted with questions and fair approximate answers given to each, furnishing thereby a guide to both boards and candidates, as well as data to refresh their memories for those who have passed the periods of examination.

It will be found to be an invaluable aid to officers of the National Guard in the pursuit of knowledge in the military service.

The work has been prepared with great labor, and the subscriber has received the valuable assistance in its preparation of Lieut.-Col. J. W. Clous, Judge Advocate, Professor of Military Law at the U. S. Military Academy, in Military Law; Major S. C. Norvell, 10th Cavalry, in Cavalry Drill; First Lieut. Thos. J. Lewis, 2d Cavalry, in Hippology; First Lieut. Wallis O. Clark, 12th Infantry (distinguished marksman), in Fire Discipline; and Second Lieut. Wm. H. Reynolds, 14th Infantry, in Military Topography-to all of whom he returns his sincere thanks.

NEW YORK CITY, 1894.

WM. H. POWELL.

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