Halifax allowed Britain to resupply Canada from the wider Empire, making the fortified base a necessary objective in a hypothetical American invasion. Any attacker had to capture it before the Royal Navy could concentrate overwhelming force in the area. Early War Plan Red scenarios often counted American ships without allowing enough time to activate vessels and find crews, producing a large gap between nominal and deployable strength. The planning exercise is useful as a demanding test of each side's worst-case assumptions, industrial depth, and force-generation speed rather than evidence that war was intended.
Notable Point · 31:01-35:52
War Plan Red exposes the gap between paper strength and readiness
An attack on Halifax had to outrun British reinforcement, while the interwar U.S. Navy first had to mobilize ships and crews that existed mainly on paper.