 Complete the following phrase:  With the outbreak of the Civil War, Christ received an appointment on April 21, 1861, as the lieutet colonel of the 5th Pennsylvania Infantry. He mustered out July 25 at the end of the regiments 3-months service. In September, he was appointed as colonel of the 50th Pennsylvania Infantry, and participated in the Battle of Port Royal. Soon he was in command of the 1st Brigade, 1st Division of the IX Corps. At Chantilly, he assumed temporary command of his division upon the death of, Isaac Stevens. He returned to command of the 1st Brigade and fought at the battles of 