Boston Crusaders was founded in 1940 and is the third-oldest drum and bugle corps in the United States. Originally named Most Precious Blood Crusaders, the corps has been a Drum Corps International World Championship finalist every year since 1999. For many years, the corps ended each year's show with "Conquest" (from the film, "Captain from Castile") and since has hidden snippets of this signature melody in their musical program.