The general known for his aggressive tactics at Antietam was Ambrose Burnside.

Commanding the Union's right flank, Burnside led a bold but ultimately costly assault on the Confederate position at the Burnside Bridge. His aggressive approach aimed to break Lee's defensive lines, but the attack faced fierce resistance and resulted in significant Union casualties. Despite his intentions, Burnside's assault demonstrated the challenges of attacking well-fortified positions and highlighted the complexities of leadership amid battle. Ultimately, his actions contributed to the battle's high casualty rates and the mixed results for the Union.