James Longstreet was one of the principal Confederate generals during the Civil War. He was the principal subordinate to Confederate Commander Robert E. Lee. Longstreet was lauded for his military tactics, which led to several Confederate victories throughout the war. However, he openly disagreed with Robert E. Lee regarding tactics in the planning previous to the Battle of Gettysburg on July 3, 1963. Longstreet suggested he mobilized troops to capture supply trains from the Union. However, this was disregarded by Lee, whose tactics would result in being faulty, as the Confederate troops were defeated that day.