"This book is based on three years' experience in conducting a course in military history in the Princeton University unit of the Field Artillery Reserve Officers Training Corps. Since there seemed to be no single volume which could give the students the essential background and facts, the lectures in this course had to be crowded with details. It appears that if the student can obtain such necessary factual introductory information from a compact textbook beforehand, the lecturer will be free to devote his time to presenting important illustrative matter.
"The volume has been written with the needs of senior and junior R.O.T.C. units particularly in mind. It should meet the official requirements in respect to the study of American military history and military policy prescribed for such courses. It is hoped that it may also prove of interest and value to reserve officers, to C.M.T.C. graduates, and to lay readers interested in military history."
Robert Greenhalgh Albion was the inaugural Gardiner Professor of Oceanic History at Harvard University, where he taught from 1948 until taking emeritus status in 1963.