 Complete the following phrase:  Starting on March 3, garrison commander Brig. Gen. McCown, defended New Madrid and Island No. 10 from a siege by the Unions Army of the Mississippi under command of Brig. Gen John Pope. McCown was promoted to Major General on March 10, 1862, and ordered the evacuation of positions at New Madrid to Island No 10. on the evening of March 13 after several days of siege. McCown was criticized for abandoning arms and supplies in a hasty withdraw from positions at New Madrid. Amid the criticism, McCown was accused of drunkenness and was replaced by William W. Mackall during the 