The Battle of Tulgas was part of the North Russia Intervention into the Russian Civil War and was fought between Allied and Bolshevik troops on the Northern Dvina River 200 miles south of Archangel. It took place on the day the armistice ending World War I was signed, November 11, 1918, and is sometimes referred to as "The Battle of Armistice Day." Shortly before the battle, the freezing of the local waterways resulted in the cutting off of the Tulgas Garrison from outside assistance, and the freezing of the ground let the Bolsheviks move troops to surround Tulgas. The Bolsheviks used this opportunity and their superior numbers to try to attack and conquer the isolated outpost, but were driven back with severe losses.