Choiseul's invasion plan depended on crossing the Channel before the Royal Navy could intercept the transports. A large French army was then expected to overwhelm Britain's comparatively weak land forces. An easy victory was doubtful because parts of Britain were difficult for armies to traverse and British garrisons could resist the invasion. Even partial interception could disrupt the landing force, while attacks on subsequent supply shipments would affect its campaign ashore. The original proposal relied on favourable winds and speed while leaving serious questions about the campaign after the crossing.
Notable Point · 1:21:09-1:23:18
Crossing the Channel would leave the invasion's supply problem unresolved
Choiseul expected a French army to overcome Britain's weaker land forces, but garrisons, difficult routes, and interrupted supplies could still obstruct a campaign after landing.