...New Orleans!" and at the first dash drove the enemy forth with great havoc.--But emerging into the open field behind, they were astonished to discover not less than three brigades opposing them, viz: Thomas Francis Meagher 's Irish brigade, Sickles's Excelsior brigade, and another one, the name of which we could not ascertain. Bravely holding their ground, the Louisianians maintained the unequal contest with great das...