Great Battles of History is the name of a series of wargames designed by Mark Herman and Richard Berg, and published by GMT Games.
The games are tactical level, with units representing hundreds of men and turns representing about twenty minutes. Scenarios cover battles from Sumer (ca 2320 BC) to Thirty Years War battles in Europe, Africa, the Middle east and Japan.
Geeklist: Comprehensive Great Battles of History Geeklist
Wiki page: Great Battles of History
Fan site: www.gboh.net