However, after a few months, he was transferred as a major to a staff position within the Army of the Potomac.

The Army of the Potomac had never moved this fast.

He saw action in all major campaigns fought by the Army of the Potomac.

By this time, the entire Army of the Potomac was on the move.

For a time he led a brigade in the Army of the Potomac.

If a man thinks he's not able to lead the Army of the Potomac, then he isn't.

The Army of the Potomac, too, was learning to fight without able chiefs.

Maybe he's gone to find out just where the Army of the Potomac is.

"I take it that the whole Army of the Potomac is here," he said.

I was in the Army of the Potomac for a while.