The 6th (Brandenburg) Cuirassiers “Emperor Nicholas I of Russia” were a heavy cavalry regiment of the Royal Prussian Army. The regiment was formed in 1807. The regiment fought in the War of the Sixth Coalition, the Second Schleswig War, the Austro-Prussian War, the Franco-Prussian War and World War I. The regiment was disbanded in 1919.
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6th (Brandenburg) Cuirassiers "Emperor Nicholas I of Russia" Wikipedia(Text) CC BY-SA