...h him, under Colonel Thoburn, to amuse Imboden's pickets, and that Thoburn had also started back to the valley of the South Branch before I arrived. Imboden was ordered to bring his brigade back to Buffalo Gap , that night, for the purpose of being sent after Averill. The question was how to cut off Averill's retreat, as he had several ways of getting back to a safe position. He might return the way ...