<P> The attack on Fort Duquesne was part of a large - scale British expedition with 6,000 troops led by General John Forbes to drive the French out of the contested Ohio Country ( the upper Ohio River Valley ) and clear the way for an invasion of Canada . Forbes ordered Major James Grant of the 1st Highland Regiment to reconnoiter the area with 850 men . When Grant proceeded to attack the French position , his force was out maneuvered , surrounded , and largely destroyed by the French and their native allies led by François - Marie Le Marchand de Lignery . Major Grant was taken prisoner and the British survivors retreated fitfully to Fort Ligonier . </P>
<P> The attack on Fort Duquesne was part of a large - scale British expedition with 6,000 troops led by General John Forbes to drive the French out of the contested Ohio Country ( the upper Ohio River Valley ) and clear the way for an invasion of Canada . Forbes ordered Major James Grant of the 1st Highland Regiment to reconnoiter the area with 850 men . When Grant proceeded to attack the French position , his force was out maneuvered , surrounded , and largely destroyed by the French and their native allies led by François - Marie Le Marchand de Lignery . Major Grant was taken prisoner and the British survivors retreated fitfully to Fort Ligonier . </P>
last name of the british officer sent to drive the french out of the ohio river valley
last name of the british officer sent to drive the french out of the ohio river valley
Forbes
Forbes