original_query: What was the significance of Baku in Hitler's 1942 Fall Blau offensive?
query: What was the significance of Baku in Hitler's 1942 Fall Blau offensive?
answer: Baku was the primary strategic goal of Hitler's 1942 Fall Blau offensive because of its crucial oil industry, which supplied over 60% of the Soviet Union's oil production at the time.  Although the German army reached the Caucasus mountains, they were defeated at Stalingrad and forced to retreat, abandoning their hopes for a Reichskommissariat Kaukasus.