Wikipedia says:
James F. Dunnigan (born 8 August 1943) is an author and wargame designer currently living in New York City, notable for his matter-of-fact approach to military analysis.
Born in Rockland County, New York, after high school, he volunteered for the military instead of waiting to be drafted. From 1961 to 1964, he worked as a repair technician for the Sergeant ballistic missile, which included a tour in Korea. Afterwards, he attended Pace University studying accounting, then transferred to Columbia University, graduating with a degree in history in 1970.
While still in college, he got involved in wargaming. He designed Jutland, which Avalon Hill published in 1967, following it up with 1914 the next year, and the groundbreaking PanzerBlitz in 1970, which eventually sold half a million copies. Meanwhile, he had founded his own company, Simulations Publications, Inc. (SPI), which issued games and published the magazine Strategy & Tactics.
Between 1966 and 1992, he designed over 100 wargames and other conflict simulations, ranging from 1969's Up Against the Wall, Motherfucker about the student takeover at Columbia (which he witnessed as a bystander), to the gigantic War in Europe, to the online Hundred Years' War, which has been running since 1992.
In 1979, he wrote The Complete Wargames Handbook, still considered a definitive work, and in 1980 How to Make War.
He also regularly gives lectures to the military, and has appeared on television as a commentator on military subjects. (...) more....

