Classic Montgomery - Bob&Dame May Whitty in Night Must Fall '37-Several outdoor scenes were filmed in Sherwood Forest, near Thousand Oaks, CA. The area was used by studios beginning in the 20s, inc Robin Hood (1922),hence the name...ridge in the back may look familiar, M.A.S.H. was filmed in about nine miles southeast of Lake Sherwood. The terrain is very similar. Think helicopters flying wounded to the Army camp. Yeah, England and South Korea are a lot alike ... only in the movies.