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).
By Robert McNamara. The Battle of Bull Run was the first major battle of the American Civil War, and it occurred, in the summer of 1861, when many people believed the war would probably only consist of one big decisive battle.he Battle of Bull Run was the first major battle of the American Civil War, and it occurred, in the summer of 1861, when many people believed the war would probably only consist of one big decisive battle.