The Brandywine battlefield was a repeat of Long Island from the previous year with a British flanking force driving Washington from the field. Washington's army was actually well placed, well supplied, and had high morale for a change and certainly could have won the battle. Say he anticipates the flanking maneuver and sends Greene at the under strength Hessians while Howe slowly marches to the ford while keeping Sullivan's force compact and ready for the "surprise". Is it possible that Howe's force is forced to retreat or even could've been destroyed piecemeal?