Both gram-positive and gram-negative bacteria commonly have a surface layer called an S-layer. In gram-positive bacteria, the S-layer is attached to the peptidoglycan layer (in gram-negative bacteria, the S-layer is attached directly to the outer membrane).
The Battle of 1st Manassas (1st Bull Run). (Battle Map). The first major battle of the Civil War was fought in Virginia, near the Manassas, Virginia railway junction, after which the battle is called (or First Bull Run, named after the flowing stream on the battlefield, if of the Union persuasion).
Impact of Bull Run (Manassas). Despite their victory, Confederate troops were far too disorganized to press their advantage and pursue the retreating Yankees, who reached Washington by July 22.The First Battle of Bull Run (called First Manassas in the South) cost some 3,000 Union casualties, compared with 1,750 for the Confederates.mpact of Bull Run (Manassas). Despite their victory, Confederate troops were far too disorganized to press their advantage and pursue the retreating Yankees, who reached Washington by July 22.