German armies took Allied forces by surprise in the Ardennes, marking the beginning of the Battle of the Bulge.
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The Battle of Wofla between the Turkish and Portuguese occurred.
The Normans defeated the Byzantine Empire in the Battle of Dyrrhachium.
The first major battle of the First English Civil War began near Edge Hill, Warwickshire.
William the Conqueror defeated English forces at The Battle of Hastings.
The Ottoman Empire signed the Treaty of Adrianople with Russia, which ended the Russo-Turkish War.
