This question requires a subjective answer. With that said, the Battle of Shiloh in April of 1862 is a good example of troop concentration. In this case, Confederate President Jefferson Davis helped coordinate with General Albert Sidney Johnston a focus of troops bent on attacking Union forces near Pittsburg Landing in Tennessee. Using rail transportation and marching, Johnston was able to amass a significant force to attack the army led by General US Grant.The first such concentration occurred at the First Battle of Bull Run.
Gettysburg. And the bloodiest one-day battle was Antietam.
Wison's Creek
During the Civil War the battle of bull run was the second battle in the war.
The Second Battle of Newbury, which occurred during the English Civil War, was fought between the Parliamentarians and the Royalists. The result of the battle was indecisive.
No Gettysburg happened two years after the war started. It was the second Confederate invasion of the North.
Fort Sumter, South Carolina was the first. The second battle was the Battle of Bull Run.
It was in hampton roads .
the seven days battle or the 1st and second battle of bull run.
The battle of Chickmauga was the second bloodiest battle, with a total 34,624 casualties.
Wilson's Creek.
The Second Battle of Deep Bottom was a US Civil War battle that took place between August 14 to the 20th in 1864. There Union forces drove back a Union assault in Virginia.
You should specify what you mean. The second battle he ever won? The second battle of the Gallic Wars? The Second battle of Caesar's Civil War? Which one? It the first case, Caesar first command an army when he was appointed governor of Hispania Ulterior (Further Spain) in 62 BC. There he fought in Lusitania. I do not have information about the battles he fought there. In the second case, the second battle of the Gallic Wars was the battle of Bibracte against the Helvetii in the department of Saône-et-Loire in France in 58 BC In the third case the second battle of Caesar's Civil War was the Battle of Dyrrachium in Albania in 48 BC.