Flying the Flag is a magazine story.
Donald and Douglas admire the flag flying at Callan Castle. Later that day, they see Bertie at the bus stop. But Bertie bumps into the bus stop sign, and knocks it over. The sign needs to be repaired, but there needs to be a sign for the passengers. Luckily Donald and Douglas have an idea, and have the sign replaced by a guards flag until the sign is repaired.