The impact of the battle on Northern public sentiment was a Strengthened resolve to fight.

The Battle of Fort Sumter had a significant effect on public sentiment in the North, greatly enhancing the determination to engage in the Civil War. The Confederate assault on the fort and its eventual capture energized many Northerners, shifting their perspective on the conflict from indifference to a strong commitment to uphold the Union. In the aftermath of the battle, President Abraham Lincoln's appeal for volunteers received an enthusiastic response, as citizens united to protect their nation against what they viewed as insurrection. This wave of patriotic enthusiasm not only mobilized troops but also reinforced public support for the Union's military efforts in the months that followed.