There was comfort in the fact that bombers and, more importantly, their fighter escorts would have to fly all the way from their bases in Germany, a distance so great as to sharply limit their reach and lethality. But this presumed that France, with its mighty army and Maginot Line and powerful navy, would stand firm and thereby hem in the Luftwaffe and block all German paths to invasion. French endurance was the cornerstone of British defensive strategy. That France might fall was beyond imagining.
