Final answer:
Guidons are authorized at the platoon level in Initial Entry Training (IET), which is indicated by the correct answer being True.
Step-by-step explanation:
The question you've asked pertains to military drill and ceremonies, specifically whether guidons are authorized at the platoon level in Initial Entry Training (IET). The correct answer is 1) True. Guidons are the flags or pennants used by military units that denote the identity of the unit and are typically carried by a member of the unit referred to as a guidon bearer. They are an important part of military tradition and are indeed used at the platoon level in IET to help in identifying units and maintaining order, which is critical in operations both large and small. The quote about fighting with a large or small army by instituting signs and signals underscores the significance of visual forms of communication, such as guidons, in maintaining coordination and discipline within military formations.