D-Day's forces moved shore to shore across the Channel and were sustained directly from Britain, which supports the deliberately provocative comparison with a very large river crossing. Amphibious warfare still claims the operation for good reason: its scale, landing craft, naval support, and beach logistics make it essential to the field. The classification asks where the force was based and sustained. It does not minimize Neptune's difficulty.
Notable Point · 27:15-28:14
Why D-Day can be described as a giant river crossing
A deliberately provocative classification distinguishes a sea-based expedition from a short cross-Channel assault sustained directly from Britain.