Final answer:
George McClellan, Winfield Scott, and John Pope were Union military leaders during the American Civil War.
Step-by-step explanation:
George McClellan, Winfield Scott, and John Pope were Union military leaders during the American Civil War. George McClellan served as the general-in-chief of the Union Army, Winfield Scott was a prominent general known for his leadership in the Mexican-American War, and John Pope led the Union Army of Virginia. Each leader played a significant role in various battles and campaigns during the war.
Learn more about Union military leaders