 On the morning of November 11, Bolshevik infantry attacked the American position in Upper Tulgas.Lieutenant Dennis realized that the attackers were too numerous and retreated across the stream to Tulgas itself.At about the same time another Bolshevik force of around 600 men attacked Lower Tulgas to the north, to the surprise of the Allies who thought that the swampy pine forest to the west had not frozen enough to be passed through.