Sir John St. Clair served as the Deputy Quartermaster General for General Edward Braddock during his campaign to capture Fort Duquesne at the Forks of the Ohio in 1755. St. Clair had great responsibilities for the Braddock Campaign. This is a study of St. Clair's role as Quartermaster on the subsequent, and successful, 1758 Campaign by Brigadier General John Forbes against Fort Duquesne.