The actual leader was of the army was Ulysses S Grant. He took his orders from President Abraham Lincoln.
The Commanding General of the Union Army (for most of the Civil War) was General Ulysses S. Grant; the Commanding General of the Confederate Army was Robert E. Lee
When the Civil War started, there were only about 16,000 men in the Union army.
General Ulysses Simpson Grant led the Army of the Potomac.
The Northern, or Union Army
The union, which is the north. the south were gray.
General Grant was the most important Union leader, and General Sherman was memorable for his army's invasion of the south.
Grant
The confederate army and the union army.
The Union army (or armies)
the Union
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ANSWER The Union Army