The Forbes Expedition was a British military expedition led by Brigadier-General John Forbes in 1758, during the latter stages of the French and Indian War.
Like the earlier unsuccessful Braddock Expedition early in the war, the strategic objective was the capture of Fort Duquesne, a French fort constructed at the confluence of the Allegheny and Monongahela Rivers in 1754 (site of present-day downtown Pittsburgh, Pennsylvania's Golden Triangle).
Forbes commanded between 6,000 and 8,000 men, including a contingent of Virginians led by George Washington. Forbes, very ill, did not keep up with the advance of his army, but entrusted it to his second in command, Lt. Col. Henry Bouquet, a Swiss officer commanding a battalion of the Royal American Regiment.
The expedition methodically constructed a road across what is now the southern part of Pennsylvania's Appalachian Plateau region, staging from Carlisle and exploiting the climb up via one of the few southern gaps of the Allegheny through the Allegheny Front, into the disputed territory of the Ohio Country, which was then a largely depopulated Amerindian tributary territory of the Iroquois Confederation. This well organized expedition was in contrast to a similar expedition led by Edward Braddock in 1755 that ended in the disastrous Battle of the Monongahela.