Final answer:
The Supply Corps Sleeve/Shoulder Board Devices are worn by the Supply Corps in the military to indicate rank and specialty. They help with communication, organization, and recogniztion.
Step-by-step explanation:
The Supply Corps Sleeve/Shoulder Board Devices are used by the Supply Corps in the military. These devices are worn on the sleeves or shoulder boards of the uniforms and indicate rank and specialty within the Supply Corps. For example, a gold star may represent the rank of Lieutenant, while a crossed quill and key may represent a Supply Officer.
The use of these devices helps to identify and distinguish different positions and ranks within the Supply Corps, allowing for clear communication and organization within the military. The devices also serve as a form of recognition for individuals who have achieved certain ranks and specialties within the Supply Corps.