What is the size of the garrison flag?

The size of the garrison flag is indeed 20 feet by 38 feet. This large flag is typically used in outdoor settings where it stands out prominently, such as at military installations or during significant ceremonies. The garrison flag represents pride and is often flown on days designated for special occasions or events when troops are present. The specific dimensions of this flag are standardized to ensure consistency across military branches and uphold ceremonial traditions. Thus, 20 feet by 38 feet is recognized as the appropriate size for the garrison flag, making it the correct answer.