What was Operation Barbarossa?

• A. The German invasion of the Soviet Union in 1941
• B. The Allied invasion of Normandy
• C. The Soviet invasion of Poland
• D. The German attack on Britain

Answer: (A)

The main idea is identifying a massive, ground invasion carried out by Germany against another major power to open a new front in World War II. Operation Barbarossa was the German invasion of the Soviet Union in 1941. It began on June 22, 1941, with a sweeping assault across a broad front, aimed at crushing Soviet military power, seizing resources, and knocking the Soviet Union out of the war before winter. The plan relied on rapid breakthroughs and encirclements, and it initially made impressive advances, capturing large areas and cities. But it failed to deliver a quick victory; stubborn Soviet resistance, logistical challenges, and the brutal Russian winter slowed and eventually halted the German advance. The operation opened the brutal, sustained fighting on the Eastern Front, fundamentally reshaping the war.

This is different from the Allied invasion of Normandy in 1944, the Soviet invasion of Poland in 1939, and the German air attack on Britain in 1940, which involve other theaters, actors, and dates.