Pskov region of Russia.Pictured:Historical reconstruction of the The Battle of the Ice (also known as the Battle of Lake Peipus) to mark 770 anniversary of the Battle. The Battle of Lake Peipus was a battle between the Republic of Novgorod and the Livonian branch of the Teutonic Knights on April 5, 1242, at Lake Peipus. The battle is notable for having been fought largely on the frozen lake.