Fill in the Blanks Hitler's Lightning War: Fill in the BlanksOnline version Test your knowledge of Germany's early WWII strategies with this engaging fill-in-the-blanks game! by Aaliyah 1 defenses gentle attack 1939 lightning war Soviet Union slow Italy invade United States German peace conference Poland 1967 non-aggression pact Blitzkrieg or " " was a military tactic that involved fast and intense attacks with tanks , artillery , and planes to beat enemy . It worked really well when Germany invaded Poland in . The with the let Germany without worrying about the Soviets getting involved right away . 2 Allied soldiers British Soldiers Ardennes forest Dunkirk evacuation Barberton Mountains Daintree Rainforest Poland France British Germany invaded through the , which was a surprise attack that France wasn't prepared for . This led to France's defeat , but the allowed over 338 , 000 to escape and regroup . 3 French Resistance London Italian Resistance Charles de Gaulle France Berlin Germany peace deal After lost in 1940 , didn't agree with the with and went to . There , he started the Free French Forces and encouraged the French people to keep fighting . He eventually became the leader of the . 4 German U-boats reorganizing late invade invite German aircraft defended early Hitler destroying aimed to Britain by the RAF . However , the RAF successfully Britain using radar . The radar provided warnings of and they also cracked the secret Enigma code , which helped Britain know what Germany was plannin g 5 weakened Axis hindered strengthened Allies resources losing North Africa and the Balkans were important to Hitler and Mussolini because they provided and it the powers and helped the win the wa r 6 defeat June 22, 1941 World War 1 Operation Barbarossa strong warm weather cold weather weak July 23, 1943 World War 2 victory was the code name for Germany's invasion of the Soviet Union during on . Germany almost reached success but ultimately stalled due to logistical problems , and Soviet resistance , including the scorched - earth strategy that led to Germany's .