 At the climax of the second battle a large body of Dakota used the terrain to mask a large movement below the lower terrace to enter buildings flanking the barricades and thereby give devastating enfilade fire.Realizing the seriousness of the situation, Flandrau and Nix lead a charge out of the barricades down Minnesota Street and swept away the advancing Dakota.After nightfall, Flandrau ordered that the rest of the buildings outside of the barricades to be burned.