Let me tell you how it goes.
In 1953 The Third Reich, exhausted by long war with native tribes in the middle east and northern Africa receives final punch destabilizing their economy - Soviet Russia under Nikita Khruschiev joins US in trade sanctions against TTR and large military forces gather at Reich/Soviet border line, with long range rocket installations around Fort Stalingrad and Leningrad Line. The cold war begins.
In late 1960ies while US is involved in fighting Japanese trying to establish royalist governments in Korea and Vietnam, The Third Reich goes through violent and bloody civil uprising led by marxist, self proclaimed Socialist Unity Party of Germany (SED) trying to overturn the government run by National Socialist German Workers Party (NSDAP) in coalition with with Social Christian Party of Germany (SPD).
While Reich Fuhrer recalls the remote Wehrmacht and SS units from outskirts of the country to fight the SED, armed by Russia, and prevent take over of East Berlin, this allows Scottish Tartan Partisans together with Irish Republican Army to push back weakening German forces first to Antonine Wall and two months later establish heavily entrenched line along Hadrian's Wall. At the gates of Lügenvälium Kastell (previously Carlisle), the iconic "Ein Volk, ein Reich, ein Führer" in marble is painted over with "Alba Gu Bra" in red letters. Entrenched and armed, Scottish units have no intention of venturing further south...
