 Complete the following phrase:  Maj. Gen. Isaac Brock assumed command of Fort Malden on August 13, 1812, and it was Brock who would lead British troops across the Detroit River days later. On August 16, with the help of Chief Tecumsehs Native warriors, Brock and Tecumsehs forces marched on Fort Detroit. It is reported that Hull was fearful of hordes of Indians swooping down upon the civilian population of Detroit, a fear that Brock and Tecumseh were able to capitalize on by convincing Hull that their ranks included 5,000 of Tecumsehs native warriors. It is largely due to the unsettling effect that the Native allies presence had upon General Hull that Fort Detroit was surrendered without resistance. The success of the 