The M1850 Foot Officer's Sword was carried by the rank of Lieutenant through Captain. Once the rank of Major was attained, the M1850 Staff & Field Officer's sword was used. This model, like the Staff & Field Officer's sword was copied from the French M1845 infantry sword.
Please see the M1850 Staff & Field Officer's page for differences in the swords.
Two young foot officers with their M1850 Foot Officer's swords and red officer's sashes
"Save in the defense of my State, I never want to draw my sword again."
- General Robert E. Lee