Who were the generals in the beginning of the Civil war?

For the Union, the General-in-Chief was the legendary Winfield Scott, so old that he would have to be replaced before long. The commander of the Union forces at the war's first pitched battle (Bull Run) was the unfortunate McDowell, who knew his army was not ready for combat. In the ascendant at this time was George McClellan, who would prove to be a failure, and John Fremont, a popular hero of the frontier, who had moved up too high for his talents and was fired. The two Generals who brought final victory - Grant and Sherman - were unknown figures at the start of hostilities.

For the Confederacy, the picture was looking better at the start, though their president was an ex-officer who wanted to play General - something that would cause endless problems. Their commander in the West was Sidney Johnston, rated as the best soldier in America, but he was killed early on. In the East, the campaign was led by Joseph E. Johnston (no relation) and the competent P.G.T. Beauregard. For the first year, Robert E. Lee was not engaged in any major campaigns.