Why Denmark and Norway anchor British northern security

Denmark and Norway give Britain defensive depth on NATO's northern flank. Third Commando Brigade was assigned to reinforce Norway, where mountains and broken coastline would make amphibious movement and logistics central to resisting Soviet forces. The scenario identifies Third Shock Army as the formation expected to push through Norway and briefly considers whether neutral Finland or Sweden might also face incursions if Moscow thought it could win quickly. Swedish neutrality matters to the air map as well, because Soviet aircraft approaching Britain via the Baltic could skim Swedish air-defence space before crossing Denmark. Fifth Brigade's Danish role helped secure the Baltic and North Sea approaches, while Greenland's constitutional link to Denmark also connected Copenhagen directly to the GIUK Gap. Holding these northern allies would protect British air approaches and help keep convoy routes into Dutch, Belgian, and German ports open.