Answer:
1. George McClellan was a U.S. Army engineer, railroad president and politician who served as a major general during the Civil War. ... In 1862, McClellan's Peninsula Campaign unraveled after the Seven Days Battles, and he also failed to decisively defeat Robert E. Lee's Confederate Army at the Battle of Antietam.
2. Winfield Scott served as commanding general of the army from 1841 to 1861. He had a lifelong ambition to be president, but the closest he came was running as the Whig nominee in 1852. ... Because of old age and infirmities he retired from the army in 1861, and he died at his beloved West Point in 1866.
3. John Pope was a career United States Army officer and Union general in the American Civil War. He had a brief stint in the Western Theater, but he is best known for his defeat at the Second Battle of Bull Run in the East. Pope was a graduate of the United States Military Academy in 1842.
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Explanation:
