On July 9, 1755, a French and Indian force routed a larger British army commanded by General Edward Braddock near present-day Pittsburgh, Pennsylvania.  It was one of the biggest Indian victories over whites in the history of North America and one of the worst defeats in the history of the British military.  The battle, known as Braddock's Defeat, or the Battle of the Monongahela, demonstrated the effectiveness of guerilla warfare and the strength of a multi-tribal Indian coalition.  It served as a valuable training ground for future commanders in the American Revolution such as George Washington on the America side and Thomas Gage, a future British general. 

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