What was Operation Barbarossa in 1941 during World War II?

Question

The initiative for what current unit of the British Army was begun during World War II in 1941 by David Stirling as a commando force operating behind enemy lines during the war in North Africa and Europe?

Answer 1

The German invasion of Russia in the Soviet Union
The operation was named after the medieval Emperor, nicknamed Barbarossa, of the Holy Roman Empire, a leader of the Third Crusade in the 12th century. Hitler's Barbarossa decree in 1941 declared that the war would be one of extermination, with the political and intellectual elites to be eradicated.