 Complete the following phrase:  Robert Murray Morris was born in the District of Columbia on May 12, 1824, to Commodore Charles Morris and Harriet Bowen Morris. He entered the military academy of West Point, in July 1841 but resigned in January 1842. He was commissioned as Second Lieutet in the Regiment of Mounted Rifles May 27, 1846 serving in the MexicanAmerican War, where he was cited for Gallant and Meritorious conduct in the battles of Contreras and 