Which sword was historically used by Army and Marine Corps officers during the Civil War?

The Army Infantry Sword is recognized as the appropriate answer because it was specifically designed and utilized by Army officers during the Civil War. This sword, often referred to in the context of its combat effectiveness, provided a balance of heritage and functionality suited to the tactics of the time.

While other options do reference types of swords and sabers, they do not accurately reflect the weapon primarily associated with Army and Marine Corps officers during that particular historical period. The NCO Sword, for example, is intended for non-commissioned officers and not for commissioned officers. The Civil War Saber, while a common type of weapon during that time, is a broader term that does not point to a specific type designed for officers. Finally, the Officer’s Sabre, while closely related, does not specifically denote the style that was the standard for officers in the Army during the Civil War context.

Understanding these distinctions helps clarify why the Army Infantry Sword is the answer that best fits the question regarding the specific weapon used by officers in this historical period.