Tactics: Tactics are specific actions or strategies employed during battles to gain an advantage over the enemy.
Total War: Total war is a strategy that involves targeting not only military objectives but also civilian resources in order to weaken the enemy's ability to continue fighting.
Emancipation Proclamation: The Emancipation Proclamation was an executive order issued by President Lincoln, which declared all slaves in Confederate-held territory to be free. It played a significant role in shaping Union strategy and contributed to their ultimate success in the war.