1942
During Autumn, German Army Group A under General List conquers North Caucasus and reaches Caspian Sea, then crosses Caucasus into Azerbaijan through the heavily defended Caspian Gates (near Derbent) and takes Baku oil fields.
He prepares for the next year to clean Soviet pockets in southern Caucasus, but in Iran, an British-American expeditionnary corps is gathered to relieve the Soviet forces in Azerbaijan (including the Iranian part).
North of Caucasus, the capture of Baku Oil fields coincide with the launch of Soviet counter-offensive in the Don-Volga area, which is fought by Army Group B under von Weichs.