Name the battles of the Civil War as identified and rated by the Civil War Sites Advisory Commission (CWSAC). Battles are rated on an A-D scale as follows:

Class A – Decisive: A general engagement involving field armies in which a commander achieved a vital strategic objective. Such a result might include an indisputable victory on the field or be limited to the success or termination of a campaign offensive. Decisive battles had a direct, observable impact on the direction, duration, conduct, or outcome of the war.
Class B – Major: An engagement of magnitude involving field armies or divisions of the armies in which a commander achieved an important strategic objective within the context of an ongoing campaign offensive. Major battles had a direct, observable impact on the direction, duration, conduct, or outcome of the campaign.
Class C – Formative: An engagement involving divisions or detachments of the field armies in which a commander accomplished a limited campaign objective of reconnaissance, disruption, defense, or occupation. Formative battles had an observable influence on the direction, duration, or conduct of the campaign.
Class D – Limited: An engagement, typically involving detachments of the field armies, in which a commander achieved a limited tactical objective of reconnaissance, defense, or occupation. Limited battles maintained contact between the combatants without observable influence on the direction of the campaign.