Throughout the history of battle weather and terrain has always been a major factor in the planning and execution of battles. During WWII two examples of the effects of weather and terrain were the Invasion of Normandy known as Operation "Overlord" and The Battle of the Bulge. During Operation Overlord a slight change in the weather could have resulted in a disastrous outcome for the Allied Forces and during the Battle of the Bulge if the weather had not favored Hitler's forces the results could have been much different.

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