Why was William Tecumseh called the ''first modern general?

William Tecumseh Sherman is often referred to as the "first modern general" due to his innovative strategies and tactics during the American Civil War, particularly his use of total war. He emphasized destroying not just enemy troops but also the economic resources that supported them, exemplified in his famous "March to the Sea." Sherman's approach combined mobility, communication, and logistics, which laid the groundwork for modern warfare. His emphasis on psychological warfare and the impact of war on civilian infrastructure marked a significant shift in military strategy.