invasion was called, proposed that two Allied armies be landed on the coast of Normandy between the mouth of the RiverOrne and the base of...
became clear to COSSAC that the area of Normandy in the Bay of the Seine, between the estuary of the RiverOrne and the base of the Cotentin Peninsula, would be the most suitable location for the amphibious forces to come ashore.
The canalized section of the RiverOrne and parallel-running Canal de Caen, which provided access by ship from the coast to Caen, formed the area's western boundary.