A northern air front changes the Battle of Britain and Crete

The alternative does not abolish the Battle of Britain; it concentrates the German threat and gives Fighter Command more scope to intercept and rotate units. British fighters operating from Norway can break up German formations well before they reach northern Britain, increasing navigation problems and aborted attacks. In the Mediterranean, a more damaged Italian battle fleet may be unable to cover amphibious operations around Crete. Avoiding the evacuation and ship damage associated with the historical campaign then preserves more British naval strength for later operations.