The Dam Busters is a 1955 British WWII war film starring Michael Redgrave and Richard Todd, and directed by Michael Anderson. The film recreates the true story of Operation Chastise, when in 1943 the RAF's 617 Squadron attacked the Möhne, Eder and Sorpe dams in Germany with Barnes Wallis's "bouncing bomb."
The film was based on the books The Dam Busters published in 1951 by Paul Brickhill and Enemy Coast Ahead published in 1946 by Guy Gibson. The attack on the Death Star in the climax of Star Wars Episode IV: A New Hope is a deliberate and acknowledged homage to the climactic sequence of The Dam Busters.
Much like in Dam Busters. in Star Wars, rebel pilots have to fly through a trench while evading enemy fire and fire a proton torpedo at a precise distance from the target in order to destroy the entire base with a single explosion; if one run fails, another run must be made by a different pilot. In addition to the similarity of the scenes, some of the dialogue is nearly identical. Star Wars also ends with an Algerian-style march, like The Dam Busters. Check out the video below and decide for yourself