Robert E. Lee
Ulysses S. Grant .
As might be expected, the Union had a number of officers with the rank of general in the US Civil War. At the end of the war, however, US Grant was in charge of the Union's fighting forces.
General MacArthur.
General Sherman
At the end of the US Civil War Lieutenant General US Grant the the chief commander of Union forces. He was the so-called general in chief. Others had held that title but none had been promoted to Lieutenant General.
The Confederate general in charge of the Army of Northern Virginia, Robert E. Lee, surrendered to the Union general in charge of the Army of the Potomac, Ulysses S. Grant, at Appomattox Court House, in Virginia.
James Terry
General George Washington
General Douglas MacArthur
General Winfield Scott.
Unlike the Union, the Confederates did not appoint a General-in-Chief until near the end of the war. This was Robert E. Lee - the right choice, but it was too late to make a difference.