Which of the following refers to a standard or banner, often of a military unit?

The term that refers to a standard or banner often associated with a military unit is "ensign." An ensign typically denotes a flag or banner that represents a specific military unit and is used in various ceremonies and displays to signify the identity of that unit. It serves not only as a symbol of pride and honor but also can convey important information about the unit's allegiance or mission.

In a military context, the ensign often bears distinctive insignia and colors that are unique to that unit, allowing troops to identify themselves in the field and fostering a sense of unity and belonging among members. Understanding this distinction is crucial, as it reflects the traditions and protocols that are important within military organizations.