The Union general criticized for his handling of Fort Sumter was Robert Anderson.

Robert Anderson served as the Union general responsible during the Confederate assault on Fort Sumter in April 1861. His leadership drew criticism for various reasons, particularly his choice to maintain control of the fort despite facing severe shortages of supplies and reinforcements. Although he fought valiantly, the fort succumbed to Confederate forces after a 34-hour bombardment, signaling the onset of the Civil War. Detractors contended that Anderson's decisions played a role in the Union's early challenges. His legacy remains multifaceted; while he exhibited bravery, the scrutiny of his strategic choices at Fort Sumter continues to spark debate among historians.