Born in Staten Island, New York, the son of accomplished illustrator and artist, Laura Nevitt Dupuy, and noted military historian, R. Ernest Dupuy, Trevor Dupuy followed in his father's footsteps.[2][3]
Dupuy went on to achieve eminence as a military historian and theorist. He is perhaps best known for his very large book The Encyclopedia Of Military History (co-written, like many of his books, with his father R. Ernest Dupuy). In this work Dupuy discusses the world's major and minor military conflicts from the dawn of history to the present day. Entries are arranged chronologically and by region, and most of them give little more than the names of the commanders and (often) very rough estimates for the size of the forces involved in the campaigns. Dupuy was not afraid of expressing an opinion and he classified some of his subjects as Great Captains (such as Alexander the Great, Hannibal, Julius Caesar, Gustavus Adolphus of Sweden, Viscount of Turenne, Frederick II of Prussia and Napoleon). The book mainly describes American and Western European conflicts but offers some coverage of other regions of the world.
The Encyclopedia Of Military History has been revised and updated several times, most recently in 1993. It can be found in the reference section of most American libraries.
Dupuy began the academic phase of his career in 1952, when Harvard University appointed him as a Professor of Military Science and Tactics in the ROTC program.[6] While there, he helped found the Harvard Defense Studies Program (directed from 1958 to 1971 by Henry Kissinger[7]). He left Harvard in 1956 to become director of the program in military studies at Ohio State University. After retiring from active military duty in 1958, he served as a visiting professor in the International Relations Program at Rangoon University (now Yangon University) in Burma. From 1960 to 1962 Dupuy worked for the Institute for Defense Analyses, a government-funded think tank.
In 1962 he formed the first of his research companies dedicated to the study and analysis of armed conflict, the Historical Evaluation and Research Organization (HERO), and served as President and Executive Director until 1983. From 1967 to 1983 he was also President of T. N. Dupuy Associates Inc. (TNDA), which became the parent organization for HERO. In 1983, TNDA sold its assets (including HERO) to a new corporation he formed called Data Memory Systems, Inc. (DMSI). Trevor was the president and largest stockholder in DMSI. In 1990, Dupuy resigned from DMSI, sold his stock and reactivated TNDA. In 1992 TNDA was closed out, and he established the non-profit The Dupuy Institute (TDI).[8]
Dupuy's main contribution to military operation analysis is the assessment method Quantified Judgment MethodorQJM, where the outcome of a battle is predicted using a fairly complicated multiplicative-additive formula in which various factors relating to the strength and firepower of the fighting parties as well as the circumstances are taken into account. Dupuy and his associates adjusted the parameters of his model by using known statistical facts of several recorded battles.
To the Colors: The Way of Life of an Army Officer (with R.E. Dupuy), Chicago, 1942
Faithful and True: History of the 5th Field Artillery, Schwabisch-Hall, Germany, 1949
Campaigns of the French Revolution and of Napoleon, Cambridge, Ma, 1956
Brave Men and Great Captains (With R. E. Dupuy), New York, 1960, 1984, 1993
Compact History of the Civil War (with R.E. Dupuy), New York, 1960, 1991
Civil War Land Battles, New York, 1960
Civil War Naval Actions, New York, 1961
Military History Of World War II, New York, 1962–65 (in 18 fairly short books):
Vol. 1 – European Land Battles: 1939–1943
Vol. 2 – European Land Battles: 1944–1945
Vol. 3 – Land Battles: North Africa, Sicily, And Italy
Vol. 4 – The Naval War In The West: The Raiders
Vol. 5 – The Naval War In The West: The Wolf Packs
Vol. 6 – The Air War In The West: September 1939 – May 1941
Vol. 7 – The Air War In The West: June 1941 – April 1945
Vol. 8 – Asiatic Land Battles: Expansion Of Japan In Asia
Vol. 9 – Asiatic Land Battles: Japanese Ambitions In The Pacific
Vol. 10 – Asiatic Land Battles: Allied Victories In China And Burma
Vol. 11 – The Naval War In The Pacific: Rising Sun Of Nippon
Vol. 12 – The Naval War In The Pacific: On To Tokyo
Vol. 13 – The Air War In The Pacific: Air Power Leads The Way
Vol. 14 – The Air War In The Pacific: Victory In The Air
Vol. 15 – European Resistance Movements
Vol. 16 – Asian And Axis Resistance Movements
Vol. 17 – Leaders Of World War II
Vol. 18 – Chronological Survey Of World War II
Compact History of the Revolutionary War (With R. E. Dupuy), New York, 1963
Holidays, Editor, Contributor., New York, 1965
Military Heritage Of America (With R. E. Dupuy, Paul Braim), 2 Vols., New York, 1966, 1986, 1992
Summation: Strategic and Combat Leadership, New York, 1967
Military History Of World War I, New York, 1967 OCLC1173614 (in 12 fairly short books):
Vol. 1 – 1914: The Battles In The West
Vol. 2 – 1914: The Battles In The East
Vol. 3 – Stalemate In The Trenches, November 1914 – March 1918
Vol. 4 – Triumphs And Tragedies In The East: 1915–17
Vol. 5 – The Campaigns On The Turkish Fronts
Vol. 6 – Campaigns In Southern Europe
Vol. 7 – 1918: The German Offensives
Vol. 8 – 1918: Decision In The West
Vol. 9 – Naval And Overseas War: 1914–15
Vol. 10 – Naval And Overseas War: 1916– 18
Vol. 11 – The War In The Air
Vol. 12 – Summary Of World War I
The Battle Of Austerlitz, New York, 1968
Modern Libraries For Modern Colleges: Research Strategies For Design And Development, Washington, D.C., 1968
Ferment In College Libraries: The Impact Of Information Technology, Washington, D.C., 1968
Mediapower: A College Plans For An Integrated Media Service System, Washington, D.C., 1968
Military History Of The Chinese Civil War, New York, 1969
The Military Lives Series (published in 1969 and 1970) :
The Military Life Of Alexander The Great
The Military Life Of Hannibal
The Military Life Of Julius Caesar
The Military Life Of Genghis Khan
The Military Life Of Gustavus Adolphus
The Military Life Of Frederick The Great
The Military Life Of George Washington
The Military Life Of Napoleon
The Military Life Of Abraham Lincoln
The Military Life Of Hindenburg And Ludendorff
The Military Life Of Adolph Hitler
The Military Life Of Winston Churchill
Revolutionary War Naval Battles (With Grace P. Hayes), New York, 1970
Revolutionary War Land Battles (With Gay M. Hammerman), New York, 1970
Mongolia, Foreign Area Studies Handbook, Washington, D.C., 1970
Almanac Of World Military Power 1970 (With John A. Andrews, Grace P. Hayes), New York, 1970
Almanac Of World Military Power 1972 (With John A. Andrews, Grace P. Hayes), New York, 1972
Documentary History Of Arms Control And Disarmament (With Gay M. Hammerman), New York, 1974
World Military Leaders (With Grace P. Hayes, Paul Martell), 1974
Almanac Of World Military Power 1974 (With John A. Andrews, Grace P. Hayes), New York, 1974
People And Events Of The American Revolution (With Gay M. Hammerman), New York, 1974
An Outline History Of The American Revolution (With R.E. Dupuy), New York, 1975
Encyclopedia Of Military History (With R.E. Dupuy), New York, 1975, 1986, 1993
A Genius For War: The German Army And General Staff, 1807–1945, New Jersey, 1977, 1984, 1989, 1993
Numbers, Predictions and War, New York, 1978, 1985
Elusive Victory: The Arab-Israeli Wars, 1947–1974, New York, 1978, 1984, 1989, 1992
Almanac Of World Military Power 1980 (With John A. Andrews, Grace P. Hayes), New York, 1980
The Evolution Of Weapons And Warfare, New York, 1980, 1984, 1986
Great Battles Of The Eastern Front (With Paul Martell), New York, 1982
Options Of Command, New York, 1984
Flawed Victory: The Arab-Israeli Conflict And The 1982 War In Lebanon (With Paul Martell), Virginia, 1986
Understanding War: Military History And The Theory Of Combat, New York, 1986
Dictionary Of Military Terms (With Curt Johnson, Grace P. Hayes), New York, 1987
Understanding Defeat: How to Recover from Loss in Battle to Gain Victory in War, New York, 1990 ISBN1-55778-099-4OCLC21118861
Attrition: Forecasting Battle Casualties And Equipment Losses In Modern War, Virginia, 1990 ISBN0-915979-26-8OCLC22965210
If War Comes, How To Defeat Saddam Hussein, Virginia, 1991; issued as a paperback with the title How To Defeat Saddam HusseinISBN0-446-36263-8OCLC23086581
^{{Dupuy, R. Ernest. Where they have trod; the West Point tradition in American life, by R. Ernest Dupuy. Illustrated from photographs, portraits and engravings, and with decorations from woodcuts by Laura Nevitt Dupuy. New York: Frederick A. Stokes Company, 1940.}}