Siege And Total War Were Useful?

Siege and total war were very helpful and useful. Siege helped the confederate army starve and lose power. Total War put an official stop to railroads shipping in goods and other things the army needed. This was the ending of the war because the confederate army was basically being tortured and could not handle it much longer. I don't find this fair because it put other people who were not fighting in torture. However, the war did not have rules so they were aloud. There for they had the right to win because they fought fairly.