The British had trouble getting the Native Americans of that time to choose a side to fight on. A lot of them wanted to see how Braddock would do in before choosing one side or the other because they wanted to choose the winning side. The major turning point that led to Braddock's death, was the Battle of the Monongahela.
Braddock went on to cross the Monongahela about 10 miles away from Fort Duquesne. George Washington Warned Braddock of the Native American and French fighting style but Braddock did not listen. Both sides were surprised by the other and the battle erupted. The British outnumbered the French by numbers of 1300 to a number estimated between 300-900. Even with the greater numbers, the battle ended with Braddock being shot and a British retreat. He would die on his horse where he was then buried along the road.