This scene is important because it starts the war between Octavius and Anthony vs Brutus and Casius. In the war Brutus and Cassius are both killed. I think that Shakpeare included this scene because he felt that he needed an event that actually begins the war. Brutus tells Messala to tell Cassius that they should make a sudden attack on Octavius and his army. I think that this scene begins the war very nicely and gives a smooth transition into the war. I think that tone is found in this scene. While Brutus is telling Messala to deliver the message he uses a lot of exclamation points. This means that he is proud of his idea and I think Messala knows to deliver the message in the same tone that Brutus uses with him.