Captain Brush In Charge Of Supplies...

...for General Hull at Fort Detroit....

Source: The Robert Lucas Journal

During the first week in August a messenger arrived from Captain Henry Brush, then at the Raisin river, with two hundred volunteers from Chillicothe [see map], one hundred head of cattle, and other supplies forwarded by Governor Meigs of Ohio, desiring an escort to Detroit, as they were threatened by a large body of Indians and feared to enter the heavy timber, anticipating an ambush.  [Source]

Captain Brush's mission was to be supported by Major Van Horne.  As the Major was en route to a rendezvous with Capt Brush, Native Americans, who were enemies of the U.S. forces, attacked Major Van Horne's troops and the mission failed.

This blog has more.