Kevin Zucker, the Managing Editor at the wargame publisher Simulations Publications Inc. (SPI), left the company in January 1976.
[1] In order to publish the game, Zucker formed the company Tactical Studies Group, and convinced George Blagowidow, the owner of Hippocrene Books and distributor of SPI wargames, to buy 800 copies.
Further products included the American Civil War game Devil's Den and the modern-day wargame Air Cobra, but OSG went out of business shortly afterwards.
After an absence of almost twenty years, Zucker eventually refounded the moribund OSG as a publisher of operational-level wargames about Napoleon's campaigns, and released Bonaparte in Italy: The Defense of Mantua and the Quadrilateral in 2000.
In October 2008, Zucker announced that OSG was going out of business at the end of the year,[2] but after a year-long hiatus, the company recommenced production with The Coming Storm, which was a finalist for the Charles S. Roberts Award for "Best Ancient to Napoleonic Era Wargame of 2010".