 Complete the following phrase:  During the siege of Charleston Harbor Stevenson commanded the 3rd Brigade in Alfred H. Terrys division. He remained in brigade command around Charleston until January 1864. On April 19, 1864 he was placed in command of the 1st Division, IX Corps. Stevenson had previously fought alongside many of the men from IX Corps in North Carolina. Now, he was one of Burnsides ablest division commanders. He led his new division into action at the battles of 