During the Civil War, regimental flags served as the rallying point for the unit, and guided the unit's movements. Loss of the flag could greatly disrupt a unit, and could have a greater effect than the death of the commanding officer.
During the Civil War, unit banners served as a rallying point for the troops, and directed their movements. The loss of the banner could significantly disrupt a unit, and have a greater impact than the death of the commanding officer.