D-Day moved forces from one shore to another across a relatively short stretch of water. Calling it a giant river crossing draws attention to that arrangement, alongside its description as the largest amphibious operation. The rival labels become an interservice joke between the US Army and Marine Corps. For Soviet security planning, the distinction mattered less than the scale of Allied forces and transport committed to the landing.
Notable Point · 41:07-42:29
D-Day and the scale of shore-to-shore lift
D-Day's movement between two shores prompts an interservice joke, but its scale demonstrated the landing capability Soviet planners feared.