 Complete the following phrase:  Upton was commissioned a second lieutet in the 4th U.S. Artillery, transferring to the 5th U.S. Artillery as a first lieutet on May 14, assigned to Brig. Gen. Irvin McDowells Army of Northeastern Virginia, as an aide-de-camp to Brig. Gen. Daniel Tyler. In the First Battle of Bull Run, July 21, 1861, he was wounded in the arm and left side during the action at 