When Quentin Tarantino wrote Inglourious Basterds (2009), even though the plot is different, he bought the copyrights of this film so the title could be the same.
Fred Williamson is named as a co-writer on screenplay on deposit at the Library of Congress Copyright Office.
One of several Italian film roles for Academy Award-nominated actor Ian Bannen in the 1970s. His part was filmed in single a day.