...ed to flank the post by a movement of the main army up the eastern shore, and in concert with the navy, seize the fortifications on the islands and main land at the head of the bay, and then approach Mobile by way of Tensas River, or one of the channels above the city. For this purpose, a point on Fish River, that empties into Bon Secour Bay, north of Mobile Point, was chosen as the place of rendezvou...