German armies took Allied forces by surprise in the Ardennes, marking the beginning of the Battle of the Bulge.
Source
Spanish conquistadors defeated a large Aztec army at the Battle of Otumba.
The first major battle of the First English Civil War began near Edge Hill, Warwickshire.
Stephen III of Moldavia defeated the Ottoman Empire at the Battle of Vaslui.
Britain and France defeated Russia during the Battle of Alma, which was the first battle of the Crimean War.
The Battle of Auray took place in the French town of Auray. The battle was between England and France, with the English winning.
