

: 98 Dunnigan had been contributing material to the magazine since its second issue in February 1967, and when Wagner was having financial challenges with the magazine he sold the rights to Dunningan for $1.

: 98 Dunnigan created SPI to save the magazine Strategy & Tactics, which at that time was published by Chris Wagner. Meanwhile, Dunnigan had founded his own company, initially known as Poultron Press, and which was soon renamed to Simulations Publications Inc. He designed Jutland, which Avalon Hill published in 1967, following it up with 1914 the next year, and PanzerBlitz in 1970, which eventually sold more than 300,000 copies. While still in college, he became involved in wargaming. Afterwards, he attended Pace University studying accounting, then transferred to Columbia University, graduating with a degree in history in 1970. From 1961 to 1964, he worked as a repair technician for the Sergeant ballistic missile his service included a tour in Korea. After high school, he volunteered for the military instead of waiting to be drafted. Dunnigan was born in Rockland County, New York.
