Short answers, pulled from the story.
Braxton Bragg was a Confederate general who commanded the Army of Mississippi and later the Army of Tennessee from June 1862 until December 1863. He saw action primarily in the Western Theater and is considered one of the most important Confederate commanders in that region, though his tenure ended in defeat and his removal by President Jefferson Davis.
Bragg is generally considered among the worst generals of the Civil War. Historian James M. McPherson grouped him with "the bumblers" who lost the Western Theater. Critics pointed to his reliance on frontal assaults, failure to follow up tactical victories, and poor relationships with subordinates. Some historians, including Judith Lee Hallock, argued that incompetent subordinates like Leonidas Polk bore more blame than Bragg typically receives.
Bragg's most significant victory was at the Battle of Chickamauga on September 19-20, 1863, the bloodiest battle in the Western Theater and the only major Confederate victory there. His army, reinforced by troops under James Longstreet from the Army of Northern Virginia, defeated Major General William Rosecrans. However, the victory came at a cost of 18,450 Confederate casualties, making it the most costly Confederate victory of the entire war.
Bragg was deeply unpopular for his strict and harsh discipline, quick temper, and what private Sam Watkins described as a desire to "crush the spirit of the men." His troops had no faith in his battlefield strategy and resented what they viewed as merciless treatment. Even Bragg's strongest supporters acknowledged his irritability and his tendency to form lasting negative impressions of subordinates.
After the war, Bragg held a series of positions he abandoned after disputes: superintendent of the New Orleans waterworks in 1867, an insurance agent for the Carolina Life Insurance Company from late 1869, a city engineer in Mobile in 1871, and chief engineer of the Gulf, Colorado and Santa Fe Railway from July 1874. He died suddenly on the 27th of September 1876, while walking in Galveston, Texas, and is buried in Magnolia Cemetery in Mobile, Alabama.
Bragg won national fame at the Battle of Buena Vista in February 1847 during the Mexican-American War, where his timely placement of artillery helped repulse a numerically superior Mexican attack. He received three brevet promotions during the war and returned home a popular hero. Fort Bragg, California, was named in his honor, and the citizens of Warrenton, North Carolina, presented him with a ceremonial sword.