The great Ralph Faulkner, fencing master and fight coordinator on most of the great Hollywood swashbucklers of the 1930s and 1940s, here doubles Henry Daniell in the climactic duel scene, much as he had done six years earlier in The Sea Hawk (1940), when Daniell (described as "completely helpless" in a memo to Hal B. Wallis, because he couldn't handle a sword) had to fight Errol Flynn.
The composer of the score, Hugo Friedhofer, worked on the earlier Errol Flynn classic The Adventures of Robin Hood (1938) as chief orchestrator for Erich Wolfgang Korngold's award-winning score. Certain elements from that score can be heard in Friedhofer's work.
It was not unusual for short subjects to film on elaborate sets after the feature had been completed. In this case, the Three Stooges' writers saw the castle sets being built and quickly wrote three period scripts to be filmed on them after "Bandit" wrapped. The three are "The Hot Scots (1948)", "Squareheads of the Round Table (1948)", and "Fiddlers Three (1948)".
Howard Hill, one of the great archery experts of the 1930s and 1940s, worked on the earlier Errol Flynn classic The Adventures of Robin Hood (1938) and, in particular, provided all of the special trick shots during the famous archery tournament. He taught Flynn how to use a bow and arrow and presumably did the same for Cornel Wilde on this film.