Final answer:
The beginning of World War II was marked by Germany's invasion of Poland on September 1, 1939, not in 1936 as the question inaccurately suggests.
Step-by-step explanation:
The statement in the question contains an error regarding the date and event of the start of the greatest war in history, World War II. It was not on 1 September 1936 when Adolf Hitler initiated the conflict; rather, Germany invaded Poland on September 1, 1939, marking the beginning of the war. The invasion demonstrated the devastating impact of combined arms, utilizing tanks, airplanes, and infantry in a strategy called blitzkrieg, or 'lightning war'. Britain and other allies soon declared war on Germany in response to this unprovoked aggression.
Following the fall of Poland, Hitler continued his expansionist policies, leading to further invasions across Europe. In a significant betrayal of the German-Soviet Nonaggression Pact, Hitler eventually launched Operation Barbarossa, a massive assault on the Soviet Union on June 22, 1941.
This invasion assembled the largest land-invasion force in world history and was a critical turn in the war as it led to the Soviet Union joining the Allies against Germany.