Detailed Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Q: This man acted as assistant to Andrew Talcott, helping to build Fort Calhoun and Fort Monroe. He found a flanking route at the Battle of Cerro Gordo during the Mexican-American War. This man took over Joseph Johnston's post after Johnston was wounded at the Battle of Seven Pines. This man won at the Battles of the (*) Wilderness and Cold Harbor, as well as Fredericksburg and Chancellorsville. He suffered losses at Antietam and Gettysburg. For 10 points, name this leader of the Confederate army.
A:
History