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Annexation of Sudetenland
A few allies and Germany signed a pack that officially sanctioned German annexation of the Sudetenland.
YouTube
(https://www.theholocaustexplained.org/life-in-nazi-occupied-europe/foreign-policy-and-the-road-to-war/occupation-of-the-sudetenland/) -
Pearl Harbor
Japan unexpectedly attacks the military base of Pearl Harbor and drags America into the war.
www.theholocaustexplained.org
(https://www.nationalww2museum.org/war/topics/pearl-harbor-december-7-1941) -
Stalingrad
Nazi Germany and its Axis allies attacked and became locked in a protracted struggle with the Soviet Union for control over the Soviet city of Stalingrad
(https://www.britannica.com/event/Battle-of-Stalingrad)
(https://www.britannica.com/video/Battle-of-Stalingrad-fighting-Germans-Allied-Victory/-18896) -
D-Day
The Allied forces storm Normandy beach to take back France
(https://www.army.mil/d-day/)
(https://www.europeafrica.army.mil/DDay/videoid/928206/) -
Period: to
Fall of Berlin
The biggest Russian army to ever be grouped attacked Berlin leading to its fall.
(https://www.britannica.com/topic/Battle-of-Berlin)
(https://study.com/academy/lesson/video/victory-in-europe-the-battle-of-berlin-the-downfall-of-the-nazi-regime.html)