On the other hand, Germany would have been far more ready to face England and France in 1942 or 1943. In particular the Kriegsmarine was completely unready to

On the other hand, Germany would have been far more ready to face England and France in 1942 or 1943. In particular the Kriegsmarine was completely unready to threaten the UK, which it was much more able to do in 1914. More submarines, cruisers, battleships to complement a superior Luftwaffe. Another few years to prepare and Germany might have been able to knock the UK out of the war. So the allies may have been unwise to not confront Germany in 1938, but the fascists were probably unwise to force the issue in 1939.